# appears at 21.18cm 1. Calculate bond length of the molecule. Given atomic masses of H and Cl are and amu respectively.

Size: px
Start display at page:

Download "appears at 21.18cm 1. Calculate bond length of the molecule. Given atomic masses of H and Cl are and amu respectively."

Transcription

1 The first line in the pure rotational spectrum of HCl appears at 21.18cm 1. Calculate bond length of the molecule. Given atomic masses of H and Cl are and amu respectively.

2

3 The microwave spectrometer t capable for operating only between 60 and 90 cm 1 1 was used to observe the rotational spectra of HI and DI. Absorption was measured as follow HI (cm 1) DI (cm 1) Find B,I and r for each molecule, and determine the J values for the first lines listed above. Do your result support the usual assumption that bond length is unchanged by isotopic substitution?

4

5

6

7 For a certain rotationally active molecule the ʋ(mhz)vs J plot showing a slope of 8603MHz. Cl Calculate lt the rotational tti constant tfor the molecule l and also the rotational quantum number for the highly populated state at 298K and 100K?

8

9 A space probe was designed to see CO in the atmosphere of Saturn by looking for lines in its rotational spectrum. If the bond length of CO is pm, at what wave number do the first three rotational tti transitions appear? What resolution would beneeded to determine the isotopic ratio of 13C and 12C on Saturn by observing three rotational lines

10

11

12 The moment of inertia about an axis perpendicular to principal axis for NH 3 is 2.82*10 47 kg m 2. NH 3 is which type of rotor? Calculate the separation (expressed in cm 1 1 ) of the pure rotational spectrum lines for NH 3. (h (the moment of inertia i about principal axis given by I ǁ = 2m H R 2 (1 cosθ) where the mass of hydrogen atom m H =1.6735*10 27 kg, the N H bond length r= 1.014*10 10 m and the bond angle is The moment of inertia about principal axis aisis I ǁ )

13

14 HCl has a B value of cm 1 and a centrifugal distortion constant D of 53* cm 11 estimate the vibrational frequency and force constant of the molecule?

15

16 The transition moment integral or the probability of transition between two rotational levels in a linear molecule may be assumed to depend only on the permanent electric dipole moment of the molecule and thus to be the same for all allowed pure rotational transitions.in the pure rotational emission spectrum of H 35 Cl gas, lines at cm 1 and cm 1 are observed to have equal intensities. What is the temperature of the gas? The Rotational Constant B for H 35 Cl is 10.6 cm 1 and the ratio of hc/k is 1.44

17

18

19 The rotational constant of NH 3 is equivalent to 298 GHz. Compute the separation of the pure rotational spectrum lines in GHz, cm 11, and show that the value of B is consistent with an N H bond length of pm and a bond angle of

20

21

22 Estimate the centrifugal distortion constant for 79 Br 81 Br,for Which B = cm0809cm 1 and γ = cm 1. By what factor Would the constant change when the 79 Br is replaced by 81 Br

23

24 The wavenumber of the incident radiation in a Raman spectrometer is cm 1 1. What is the wavenumber of the scattered stokes Radiation for the J=0 to J=2 transition for 14 N 2

25

26 The first three lines in the R branch of fundamental Vibration Rotation band for H 35 Cl have the following Frequency in cm 1 : (0), (1), (2) Where the number in parentheses are the J values for the Initial levels. What are the values of γ 1 0 (cm ), B v, B v, B e and α

27

28

29 For 14 N 2, the Δγ values for the transitions v= 0 1, v= 0 2 and v= 0 3 are respectively, , and cm 1 Calculate γ e, x e, dissociation energy (D 0 ) for the molecule.

30

31 Calculate the percentage difference in fundamental vibration Wavenumber of 1 H 35 Cl and 2 H 37 Cl on the assumption that Their force constants are same.

32

### Application Note AN4

TAKING INVENTIVE STEPS IN INFRARED. MINIATURE INFRARED GAS SENSORS GOLD SERIES UK Patent App. No. 2372099A USA Patent App. No. 09/783,711 World Patents Pending INFRARED SPECTROSCOPY Application Note AN4

### where h = 6.62 10-34 J s

Electromagnetic Spectrum: Refer to Figure 12.1 Molecular Spectroscopy: Absorption of electromagnetic radiation: The absorptions and emissions of electromagnetic radiation are related molecular-level phenomena

### The Fundamentals of Infrared Spectroscopy. Joe Van Gompel, PhD

TN-100 The Fundamentals of Infrared Spectroscopy The Principles of Infrared Spectroscopy Joe Van Gompel, PhD Spectroscopy is the study of the interaction of electromagnetic radiation with matter. The electromagnetic

### Module 3 : Molecular Spectroscopy Lecture 13 : Rotational and Vibrational Spectroscopy

Module 3 : Molecular Spectroscopy Lecture 13 : Rotational and Vibrational Spectroscopy Objectives After studying this lecture, you will be able to Calculate the bond lengths of diatomics from the value

### 3. Electronic Spectroscopy of Molecules I - Absorption Spectroscopy

3. Electronic Spectroscopy of Molecules I - Absorption Spectroscopy 3.1. Vibrational coarse structure of electronic spectra. The Born Oppenheimer Approximation introduced in the last chapter can be extended

### Infrared Spectroscopy: Theory

u Chapter 15 Infrared Spectroscopy: Theory An important tool of the organic chemist is Infrared Spectroscopy, or IR. IR spectra are acquired on a special instrument, called an IR spectrometer. IR is used

### Molecular Spectroscopy:

: How are some molecular parameters determined? Bond lengths Bond energies What are the practical applications of spectroscopic knowledge? Can molecules (or components thereof) be identified based on differences

### 0 10 20 30 40 50 60 70 m/z

Mass spectrum for the ionization of acetone MS of Acetone + Relative Abundance CH 3 H 3 C O + M 15 (loss of methyl) + O H 3 C CH 3 43 58 0 10 20 30 40 50 60 70 m/z It is difficult to identify the ions

### CHAPTER 13 MOLECULAR SPECTROSCOPY

CHAPTER 13 MOLECULAR SPECTROSCOPY Our most detailed knowledge of atomic and molecular structure has been obtained from spectroscopy study of the emission, absorption and scattering of electromagnetic radiation

### Determining the Structure of an Organic Compound

Determining the Structure of an Organic Compound The analysis of the outcome of a reaction requires that we know the full structure of the products as well as the reactants In the 19 th and early 20 th

### Group Theory and Chemistry

Group Theory and Chemistry Outline: Raman and infra-red spectroscopy Symmetry operations Point Groups and Schoenflies symbols Function space and matrix representation Reducible and irreducible representation

### EXPERIMENT 7. VIBRATION-ROTATION SPECTRUM OF HCl AND DCl INTRODUCTION

1 EXPERIMENT 7 VIBRATION-ROTATION SPECTRUM OF HCl AND DCl INTRODUCTION Spectroscopy probes transitions between different energy levels, or states, using light. Light in the infrared region of the EM spectrum

### Time out states and transitions

Time out states and transitions Spectroscopy transitions between energy states of a molecule excited by absorption or emission of a photon hn = DE = E i - E f Energy levels due to interactions between

### Symmetric Stretch: allows molecule to move through space

BACKGROUND INFORMATION Infrared Spectroscopy Before introducing the subject of IR spectroscopy, we must first review some aspects of the electromagnetic spectrum. The electromagnetic spectrum is composed

### electron does not become part of the compound; one electron goes in but two electrons come out.

Characterization Techniques for Organic Compounds. When we run a reaction in the laboratory or when we isolate a compound from nature, one of our first tasks is to identify the compound that we have obtained.

### Raman Spectroscopy. 1. Introduction. 2. More on Raman Scattering. " scattered. " incident

February 15, 2006 Advanced Physics Laboratory Raman Spectroscopy 1. Introduction When light is scattered from a molecule or crystal, most photons are elastically scattered. The scattered photons have the

### Chem 112 Intermolecular Forces Chang From the book (10, 12, 14, 16, 18, 20,84,92,94,102,104, 108, 112, 114, 118 and 134)

Chem 112 Intermolecular Forces Chang From the book (10, 12, 14, 16, 18, 20,84,92,94,102,104, 108, 112, 114, 118 and 134) 1. Helium atoms do not combine to form He 2 molecules, What is the strongest attractive

### Absorption by atmospheric gases in the IR, visible and UV spectral regions.

Lecture 6. Absorption by atmospheric gases in the IR, visible and UV spectral regions. Objectives: 1. Gaseous absorption in thermal IR. 2. Gaseous absorption in the visible and near infrared. 3. Gaseous

### 2. Molecular stucture/basic

2. Molecular stucture/basic spectroscopy The electromagnetic spectrum Spectral region for atomic and molecular spectroscopy E. Hecht (2nd Ed.) Optics, Addison-Wesley Publishing Company,1987 Spectral regions

### 13C NMR Spectroscopy

13 C NMR Spectroscopy Introduction Nuclear magnetic resonance spectroscopy (NMR) is the most powerful tool available for structural determination. A nucleus with an odd number of protons, an odd number

### The Rotational-Vibrational Spectrum of HCl

The Rotational-Vibrational Spectrum of HCl Objective To obtain the rotationally resolved vibrational absorption spectrum of HCI; to determine the rotational constant and rotational-vibrational coupling

### Raman Scattering Theory David W. Hahn Department of Mechanical and Aerospace Engineering University of Florida (dwhahn@ufl.edu)

Introduction Raman Scattering Theory David W. Hahn Department of Mechanical and Aerospace Engineering University of Florida (dwhahn@ufl.edu) The scattering of light may be thought of as the redirection

### Section 6 Raman Scattering (lecture 10)

Section 6 Scattering (lecture 10) Previously: Quantum theory of atoms / molecules Quantum Mechanics Valence Atomic and Molecular Spectroscopy Scattering The scattering process Elastic (Rayleigh) and inelastic

### Nuclear Magnetic Resonance Spectroscopy

Nuclear Magnetic Resonance Spectroscopy Nuclear magnetic resonance spectroscopy is a powerful analytical technique used to characterize organic molecules by identifying carbonhydrogen frameworks within

### Molecular Formula Determination

Molecular Formula Determination Classical Approach Qualitative elemental analysis Quantitative elemental analysis Determination of empirical formula Molecular weight determination Molecular formula determination

### Simple Laser-Induced Fluorescence Setup to Explore Molecular Spectroscopy. Abstract

Simple Laser-Induced Fluorescence Setup to Explore Molecular Spectroscopy S. B. Bayram and M.D. Freamat Miami University, Department of Physics, Oxford, OH 45056 (Dated: July 23, 2012) Abstract We will

### Infrared Spectroscopy 紅 外 線 光 譜 儀

Infrared Spectroscopy 紅 外 線 光 譜 儀 Introduction Spectroscopy is an analytical technique which helps determine structure. It destroys little or no sample (nondestructive method). The amount of light absorbed

### Chemistry 102 Summary June 24 th. Properties of Light

Chemistry 102 Summary June 24 th Properties of Light - Energy travels through space in the form of electromagnetic radiation (EMR). - Examples of types of EMR: radio waves, x-rays, microwaves, visible

### Organic Chemistry Tenth Edition

Organic Chemistry Tenth Edition T. W. Graham Solomons Craig B. Fryhle Welcome to CHM 22 Organic Chemisty II Chapters 2 (IR), 9, 3-20. Chapter 2 and Chapter 9 Spectroscopy (interaction of molecule with

### Symmetry and group theory

Symmetry and group theory or How to Describe the Shape of a Molecule with two or three letters Natural symmetry in plants Symmetry in animals 1 Symmetry in the human body The platonic solids Symmetry in

### Organic Spectroscopy. UV - Ultraviolet-Visible Spectroscopy. !! 200-800 nm. Methods for structure determination of organic compounds:

Organic Spectroscopy Methods for structure determination of organic compounds: X-ray rystallography rystall structures Mass spectroscopy Molecular formula -----------------------------------------------------------------------------

### The Role of Electric Polarization in Nonlinear optics

The Role of Electric Polarization in Nonlinear optics Sumith Doluweera Department of Physics University of Cincinnati Cincinnati, Ohio 45221 Abstract Nonlinear optics became a very active field of research

### Chapter 13 Spectroscopy NMR, IR, MS, UV-Vis

Chapter 13 Spectroscopy NMR, IR, MS, UV-Vis Main points of the chapter 1. Hydrogen Nuclear Magnetic Resonance a. Splitting or coupling (what s next to what) b. Chemical shifts (what type is it) c. Integration

### Infrared Spectroscopy

Infrared Spectroscopy 1 Chap 12 Reactions will often give a mixture of products: OH H 2 SO 4 + Major Minor How would the chemist determine which product was formed? Both are cyclopentenes; they are isomers.

### CHEMICAL EQUILIBRIUM (ICE METHOD)

CHEMICAL EQUILIBRIUM (ICE METHOD) Introduction Chemical equilibrium occurs when opposing reactions are proceeding at equal rates. The rate at which the products are formed from the reactants equals the

### For example: (Example is from page 50 of the Thinkbook)

SOLVING COMBINED SPECTROSCOPY PROBLEMS: Lecture Supplement: page 50-53 in Thinkbook CFQ s and PP s: page 216 241 in Thinkbook Introduction: The structure of an unknown molecule can be determined using

### 4. It is possible to excite, or flip the nuclear magnetic vector from the α-state to the β-state by bridging the energy gap between the two. This is a

BASIC PRINCIPLES INTRODUCTION TO NUCLEAR MAGNETIC RESONANCE (NMR) 1. The nuclei of certain atoms with odd atomic number, and/or odd mass behave as spinning charges. The nucleus is the center of positive

### INFRARED SPECTROSCOPY (IR)

INFRARED SPECTROSCOPY (IR) Theory and Interpretation of IR spectra ASSIGNED READINGS Introduction to technique 25 (p. 833-834 in lab textbook) Uses of the Infrared Spectrum (p. 847-853) Look over pages

### F321 THE STRUCTURE OF ATOMS. ATOMS Atoms consist of a number of fundamental particles, the most important are... in the nucleus of an atom

Atomic Structure F32 TE STRUCTURE OF ATOMS ATOMS Atoms consist of a number of fundamental particles, the most important are... Mass / kg Charge / C Relative mass Relative Charge PROTON NEUTRON ELECTRON

### Nuclear Magnetic Resonance

Nuclear Magnetic Resonance NMR is probably the most useful and powerful technique for identifying and characterizing organic compounds. Felix Bloch and Edward Mills Purcell were awarded the 1952 Nobel

### Determination of Molecular Structure by MOLECULAR SPECTROSCOPY

Determination of Molecular Structure by MOLEULAR SPETROSOPY hemistry 3 B.Z. Shakhashiri Fall 29 Much of what we know about molecular structure has been learned by observing and analyzing how electromagnetic

### ANALYSIS OF ASPIRIN INFRARED (IR) SPECTROSCOPY AND MELTING POINT DETERMINATION

Chem 306 Section (Circle) M Tu W Th Name Partners Date ANALYSIS OF ASPIRIN INFRARED (IR) SPECTROSCOPY AND MELTING POINT DETERMINATION Materials: prepared acetylsalicylic acid (aspirin), stockroom samples

### Section 5 Molecular Electronic Spectroscopy (lecture 9 ish)

Section 5 Molecular Electronic Spectroscopy (lecture 9 ish) Previously: Quantum theory of atoms / molecules Quantum Mechanics Vl Valence Molecular Electronic Spectroscopy Classification of electronic states

### 8.1 Radio Emission from Solar System objects

8.1 Radio Emission from Solar System objects 8.1.1 Moon and Terrestrial planets At visible wavelengths all the emission seen from these objects is due to light reflected from the sun. However at radio

### MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Exam Name 1) Which compound would be expected to show intense IR absorption at 3300 cm-1? A) butane B) CH3CH2C CH C)CH3C CCH3 D) but-1-ene 1) 2) Which compound would be expected to show intense IR absorption

### Chapter 18: The Structure of the Atom

Chapter 18: The Structure of the Atom 1. For most elements, an atom has A. no neutrons in the nucleus. B. more protons than electrons. C. less neutrons than electrons. D. just as many electrons as protons.

### Vibration-Rotation Bands of Carbonyl Sulfide

JOURNAL OF RESEARCH of the National Bureau of Standards A. Physics and Chemistry Vol. 66A, No., March-April 96 Vibration-Rotation Bands of Carbonyl Sulfide Arthur G. Maki, Earle K. Plyler, and Eugene D.

### ENERGY & ENVIRONMENT

Greenhouse molecules, their spectra and function in the atmosphere by Jack Barrett Reprinted from ENERGY & ENVIRNMENT VLUME 16 No. 6 2005 MULTI-SCIENCE PUBLISING C. LTD. 5 Wates Way, Brentwood, Essex CM15

### Light as a Wave. The Nature of Light. EM Radiation Spectrum. EM Radiation Spectrum. Electromagnetic Radiation

The Nature of Light Light and other forms of radiation carry information to us from distance astronomical objects Visible light is a subset of a huge spectrum of electromagnetic radiation Maxwell pioneered

### 2 Absorbing Solar Energy

2 Absorbing Solar Energy 2.1 Air Mass and the Solar Spectrum Now that we have introduced the solar cell, it is time to introduce the source of the energy the sun. The sun has many properties that could

### Chemistry 2 Chapter 13: Electrons in Atoms Please do not write on the test Use an answer sheet! 1 point/problem 45 points total

Chemistry 2 Chapter 13: Electrons in Atoms Please do not write on the test Use an answer sheet! 1 point/problem 45 points total 1. Calculate the energy in joules of a photon of red light that has a frequency

### for excitation to occur, there must be an exact match between the frequency of the applied radiation and the frequency of the vibration

! = 1 2"c k (m + M) m M wavenumbers! =!/c = 1/" wavelength frequency! units: cm 1 for excitation to occur, there must be an exact match between the frequency of the applied radiation and the frequency

### ACE PRACTICE TEST Chapter 8, Quiz 3

ACE PRACTICE TEST Chapter 8, Quiz 3 1. Using bond energies, calculate the heat in kj for the following reaction: CH 4 + 4 F 2 CF 4 + 4 HF. Use the following bond energies: CH = 414 kj/mol, F 2 = 155 kj/mol,

### 5.33 Lecture Notes: Introduction to Spectroscopy

5.33 Lecture Notes: ntroduction to Spectroscopy What is spectroscopy? Studying the properties of matter through its interaction with different frequency components of the electromagnetic spectrum. Latin:

### Partition Function and Thermodynamic Quantities for the H 2 17 O and H 2 18 O Isotopologues of Water

Partition Function and Thermodynamic Quantities for the H 2 17 O and H 2 18 O Isotopologues of Water By Daniel Underwood PHASM101 Msci Astrophysics Project Supervisor: Prof. Jonathan Tennyson 31 st March

### Raman spectroscopy Lecture

Raman spectroscopy Lecture Licentiate course in measurement science and technology Spring 2008 10.04.2008 Antti Kivioja Contents - Introduction - What is Raman spectroscopy? - The theory of Raman spectroscopy

### 6. 3. Molecular spectroscopy. Unit 6: Physical chemistry of spectroscopy, surfaces and chemical and phase equilibria

6. 3 Molecular spectroscopy Spectroscopy in its various forms is a technique with wide applications across many disciplines. From qualitative analysis in toxicology through to quantitative measurements

### From lowest energy to highest energy, which of the following correctly orders the different categories of electromagnetic radiation?

From lowest energy to highest energy, which of the following correctly orders the different categories of electromagnetic radiation? From lowest energy to highest energy, which of the following correctly

### Solar Energy. Outline. Solar radiation. What is light?-- Electromagnetic Radiation. Light - Electromagnetic wave spectrum. Electromagnetic Radiation

Outline MAE 493R/593V- Renewable Energy Devices Solar Energy Electromagnetic wave Solar spectrum Solar global radiation Solar thermal energy Solar thermal collectors Solar thermal power plants Photovoltaics

### Electromagnetic Radiation (EMR) and Remote Sensing

Electromagnetic Radiation (EMR) and Remote Sensing 1 Atmosphere Anything missing in between? Electromagnetic Radiation (EMR) is radiated by atomic particles at the source (the Sun), propagates through

### 2.1-2 28-30 & 1 & 5 & 1950, 3 & 1971), & II

Lecture 13 Molecular Spectroscopy 1. Long Wavelength Signatures 2. Introduction to Molecular Structure 3. Molecular Levels and Spectra 4. Emission and Absorption References Astro texts: Tielens, Secs 2.1-2

### Hydrogen Bonds in Water-Methanol Mixture

Bulg. J. Phys. 34 (2007) 103 107 Hydrogen Bonds in Water-Methanol Mixture G.M. Georgiev, K. Vasilev, K. Gyamchev Faculty of Physics, University of Sofia 5J.Bourchier Blvd., 1164 Sofia, Bulgaria Received

### The Mole. 6.022 x 10 23

The Mole 6.022 x 10 23 Background: atomic masses Look at the atomic masses on the periodic table. What do these represent? E.g. the atomic mass of Carbon is 12.01 (atomic # is 6) We know there are 6 protons

### Molecular Spectroscopy

Molecular Spectroscopy UV-Vis Spectroscopy Absorption Characteristics of Some Common Chromophores UV-Vis Spectroscopy Absorption Characteristics of Aromatic Compounds UV-Vis Spectroscopy Effect of extended

### PCV Project: Excitons in Molecular Spectroscopy

PCV Project: Excitons in Molecular Spectroscopy Introduction The concept of excitons was first introduced by Frenkel (1) in 1931 as a general excitation delocalization mechanism to account for the ability

### Organic Spectroscopy

1 Organic Spectroscopy Second Year, Michaelmas term, 8 lectures: Dr TDW Claridge & Prof BG Davis Lectures 1 4 highlight the importance of spectroscopic methods in the structural elucidation of organic

### 13- What is the maximum number of electrons that can occupy the subshell 3d? a) 1 b) 3 c) 5 d) 2

Assignment 06 A 1- What is the energy in joules of an electron undergoing a transition from n = 3 to n = 5 in a Bohr hydrogen atom? a) -3.48 x 10-17 J b) 2.18 x 10-19 J c) 1.55 x 10-19 J d) -2.56 x 10-19

### AP CHEMISTRY 2009 SCORING GUIDELINES

AP CHEMISTRY 2009 SCORING GUIDELINES Question 6 (8 points) Answer the following questions related to sulfur and one of its compounds. (a) Consider the two chemical species S and S 2. (i) Write the electron

### passing through (Y-axis). The peaks are those shown at frequencies when less than

Infrared Spectroscopy used to analyze the presence of functional groups (bond types) in organic molecules The process for this analysis is two-fold: 1. Accurate analysis of infrared spectra to determine

### Labs in Bologna & Potenza Menzel. Lab 3 Interrogating AIRS Data and Exploring Spectral Properties of Clouds and Moisture

Labs in Bologna & Potenza Menzel Lab 3 Interrogating AIRS Data and Exploring Spectral Properties of Clouds and Moisture Figure 1: High resolution atmospheric absorption spectrum and comparative blackbody

### - thus, the total number of atoms per second that absorb a photon is

Stimulated Emission of Radiation - stimulated emission is referring to the emission of radiation (a photon) from one quantum system at its transition frequency induced by the presence of other photons

### Spectroscopy. Biogeochemical Methods OCN 633. Rebecca Briggs

Spectroscopy Biogeochemical Methods OCN 633 Rebecca Briggs Definitions of Spectrometry Defined by the method used to prepare the sample 1. Optical spectrometry Elements are converted to gaseous atoms or

### Chapter 5. IR Spectroscopy and Raman Scattering

PDF File: (Click to Down Load): Chapter5.pdf Polymer Analysis = Back to TOC = To Syllabus Chapter 5. IR Spectroscopy and Raman Scattering (Chapter 5 Campbell & White). Bristol University IR Spectroscopy

### GIANT FREQUENCY SHIFT OF INTRAMOLECULAR VIBRATION BAND IN THE RAMAN SPECTRA OF WATER ON THE SILVER SURFACE. M.E. Kompan

GIANT FREQUENCY SHIFT OF INTRAMOLECULAR VIBRATION BAND IN THE RAMAN SPECTRA OF WATER ON THE SILVER SURFACE M.E. Kompan Ioffe Institute, Saint-Peterburg, Russia kompan@mail.ioffe.ru The giant frequency

### Atomic Masses. Chapter 3. Stoichiometry. Chemical Stoichiometry. Mass and Moles of a Substance. Average Atomic Mass

Atomic Masses Chapter 3 Stoichiometry 1 atomic mass unit (amu) = 1/12 of the mass of a 12 C atom so one 12 C atom has a mass of 12 amu (exact number). From mass spectrometry: 13 C/ 12 C = 1.0836129 amu

### CHE334 Identification of an Unknown Compound By NMR/IR/MS

CHE334 Identification of an Unknown Compound By NMR/IR/MS Purpose The object of this experiment is to determine the structure of an unknown compound using IR, 1 H-NMR, 13 C-NMR and Mass spectroscopy. Infrared

### Lecture 1: Basic Concepts on Absorption and Fluorescence

Lecture 1: Basic Concepts on Absorption and Fluorescence Nicholas G. James Cell and Molecular Biology University of Hawaii at Manoa, Honolulu The Goal The emission of light after absorption of an outside

### Self Assessment_Ochem I

UTID: 2013 Objective Test Section Identify the choice that best completes the statement or answers the question. There is only one correct answer; please carefully bubble your choice on the scantron sheet.

### 1 The water molecule and hydrogen bonds in water

The Physics and Chemistry of Water 1 The water molecule and hydrogen bonds in water Stoichiometric composition H 2 O the average lifetime of a molecule is 1 ms due to proton exchange (catalysed by acids

### AS1 MOLES. oxygen molecules have the formula O 2 the relative mass will be 2 x 16 = 32 so the molar mass will be 32g mol -1

Moles 1 MOLES The mole the standard unit of amount of a substance the number of particles in a mole is known as Avogadro s constant (L) Avogadro s constant has a value of 6.023 x 10 23 mol -1. Example

### ELECTRON SPIN RESONANCE Last Revised: July 2007

QUESTION TO BE INVESTIGATED ELECTRON SPIN RESONANCE Last Revised: July 2007 How can we measure the Landé g factor for the free electron in DPPH as predicted by quantum mechanics? INTRODUCTION Electron

### Background A nucleus with an odd atomic number or an odd mass number has a nuclear spin that can be observed by NMR spectrometers.

NMR Spectroscopy I Reading: Wade chapter, sections -- -7 Study Problems: -, -7 Key oncepts and Skills: Given an structure, determine which protons are equivalent and which are nonequivalent, predict the

### Chapter 3: Stoichiometry

Chapter 3: Stoichiometry Key Skills: Balance chemical equations Predict the products of simple combination, decomposition, and combustion reactions. Calculate formula weights Convert grams to moles and

### 5. The Nature of Light. Does Light Travel Infinitely Fast? EMR Travels At Finite Speed. EMR: Electric & Magnetic Waves

5. The Nature of Light Light travels in vacuum at 3.0. 10 8 m/s Light is one form of electromagnetic radiation Continuous radiation: Based on temperature Wien s Law & the Stefan-Boltzmann Law Light has

### MEMORANDUM GRADE 11. PHYSICAL SCIENCES: CHEMISTRY Paper 2

MEMORANDUM GRADE 11 PHYSICAL SCIENCES: CHEMISTRY Paper 2 MARKS: 150 TIME: 3 hours Learning Outcomes and Assessment Standards LO1 LO2 LO3 AS 11.1.1: Plan and conduct a scientific investigation to collect

### Unit 11 Practice. Name: Class: Date: Multiple Choice Identify the choice that best completes the statement or answers the question.

Name: Class: Date: Unit 11 Practice Multiple Choice Identify the choice that best completes the statement or answers the question. 1) Crystalline solids. A) have their particles arranged randomly B) have

### 12.4 FUNCTIONAL-GROUP INFRARED ABSORPTIONS

552 APTER 12 INTRODUTION TO SPETROSOPY. INFRARED SPETROSOPY AND MASS SPETROMETRY PROBLEM 12.9 Which of the following vibrations should be infrared-active and which should be infrared-inactive (or nearly

### How To Write A Laboratory Report

AN EXAMPLE REPORT by Cecil Dybowski, dybowski@udel.edu Here you list all names of people involved, along with email addresses. CHEMISTRY 446 Here you enter the section and group numbers. EXPERIMENT 6 Here

### Energy Transport. Focus on heat transfer. Heat Transfer Mechanisms: Conduction Radiation Convection (mass movement of fluids)

Energy Transport Focus on heat transfer Heat Transfer Mechanisms: Conduction Radiation Convection (mass movement of fluids) Conduction Conduction heat transfer occurs only when there is physical contact

### Physics Notes Class 11 CHAPTER 2 UNITS AND MEASUREMENTS

1 P a g e Physics Notes Class 11 CHAPTER 2 UNITS AND MEASUREMENTS The comparison of any physical quantity with its standard unit is called measurement. Physical Quantities All the quantities in terms of

### Waves - Transverse and Longitudinal Waves

Waves - Transverse and Longitudinal Waves wave may be defined as a periodic disturbance in a medium that carries energy from one point to another. ll waves require a source and a medium of propagation.

### INSPIRE GK12 Lesson Plan. The Chemistry of Climate Change Length of Lesson

Lesson Title The Chemistry of Climate Change Length of Lesson 180 min Created By David Wilson Subject Physical Science / Chemistry / Organic Chemistry Grade Level 8-12 State Standards 2c, 4d / 2a, 4d /

### Sample Exercise 6.1 Concepts of Wavelength and Frequency

Sample Exercise 6.1 Concepts of Wavelength and Frequency Two electromagnetic waves are represented in the margin. (a) Which wave has the higher frequency? (b) If one wave represents visible light and the

### Mass Spectrometry. Overview

Mass Spectrometry Overview Mass Spectrometry is an analytic technique that utilizes the degree of deflection of charged particles by a magnetic field to find the relative masses of molecular ions and fragments.2

### Near-field scanning optical microscopy (SNOM)

Adviser: dr. Maja Remškar Institut Jožef Stefan January 2010 1 2 3 4 5 6 Fluorescence Raman and surface enhanced Raman 7 Conventional optical microscopy-limited resolution Two broad classes of techniques

### QUANTITATIVE INFRARED SPECTROSCOPY. Willard et. al. Instrumental Methods of Analysis, 7th edition, Wadsworth Publishing Co., Belmont, CA 1988, Ch 11.

QUANTITATIVE INFRARED SPECTROSCOPY Objective: The objectives of this experiment are: (1) to learn proper sample handling procedures for acquiring infrared spectra. (2) to determine the percentage composition

### Exam 4 Practice Problems false false

Exam 4 Practice Problems 1 1. Which of the following statements is false? a. Condensed states have much higher densities than gases. b. Molecules are very far apart in gases and closer together in liquids

### Physics 1A Lecture 10C

Physics 1A Lecture 10C "If you neglect to recharge a battery, it dies. And if you run full speed ahead without stopping for water, you lose momentum to finish the race. --Oprah Winfrey Static Equilibrium