Curso: FUNDAMENTOS DE QUIMICA ORGANICA Y BIOLOGICA FUNDAMENTALS OF ORGANIC AND BIOLOGICAL CHEMISTRY

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1 UNIVERSIDAD DEL TURABO ESCUELA DE CIENCIAS Y TECNOLOGIA DEPARTAMENTO DE FISICA & QUIMICA GURABO, PUERTO RICO Curso: FUNDAMENTOS DE QUIMICA ORGANICA Y BIOLOGICA FUNDAMENTALS OF ORGANIC AND BIOLOGICAL CHEMISTRY Clave del Curso: CHEM- 225 Sección: 131 Texto sugerido Timberlake, Karen C. Chemistry: An Introduction to General, Organic, and Biological Chemistry. Upper Saddle River: Pearson Prentice Hall, 11th Edition, PRACTICA CAPITULO 13-ACIDOS CARBOXILICOS, ESTERES, AMI AS Y AMIDAS 1- What is the IUPAC name of this compound? a)pentanoic acid b)3-methylpentanoic acid c) 3-methyl-5-pentanoic acid d)3-methyl-1-pentanoic acid 2- Which of these compounds is(are) a carboxylic acid? a) structure A b) structures B and C c) structure C

2 d) structures A and C 3- What is the IUPAC name of this compound? a) 3,4-dimethylbenzoic acid b) 3,4-dimethylbenzene c) 4,5-dimethylbenzoic acid d) 3,4-diethylbenzoic acid 4- The distinctive odor of vinegar comes from a) formic acid. b) acetic acid. c) propionic acid. d) butyric acid. 5-Methylpentanoic acid can be produced by an oxidation of a) 3-methylpentanal. b) 3-methyl-1-pentanol c) 3-methyl-2-pentanol d) answers 1 and 2 6- Which statement(s) about boiling points is true? a) Acetic acid has a higher boiling point than butanoic acid. b) Propanoic acid has a higher boiling point than propanone c) Butanoic acid has a higher boiling point than 2-butanol. d) Statements 2 and 3 7- Rank these compounds from lowest to highest solubility in water. (2-pentanone, butanoic acid and hexane) a) 2-pentanone < butanoic acid < hexane b) 2-pentanone < hexane < butanoic acid c) hexane < 2-pentanone < butanoic acid d) butanoic acid < 2-pentanone < hexane 2

3 8- Carboxylic acids are water soluble due to their a) ability to hydrogen bond. b) ionic bonds. c) high melting points. d) nonpolar nature. 9- What are the products of the neutralization reaction shown below? a) b) c) d) 3

4 10- Indicate whether each of following carboxylic acids are soluble in water a) Hexanoic Acid b) Acetic Acid c) Propanoic Acid d) Benzoic Acid e) Formic Acid f) Octanic Acid 11- Write the formulas for the following carboxylic Acid a) Acetic Acid b) Benzoic Acid c) Formic Acid d) 2-ketobutanoic Acid e) 3-Hidroypropanoic Acid f) 3-methyl pentanoic Acid 12- Identify the compound in each pair that has the higher boiling point a) Acetic acid Butyric Acid b) Propanoic Acid or 2- propanol c) Propanoic Acid or propanone d) Acetic Acid or Acetaldehyde 13- What is the IUPAC name of this compound? O a) butyl propanoate b) Ethyl pentanoate c) propyl butanoate d) 1-propyl butanoate O 14 - What is the IUPAC name of this compound? a) methyl ethanoate b) methyl butanoate c) butyl propanoate d) methyl propanoate 4

5 15- Give the names of the two substances needed to produce butyl propanoate in an esterification reaction. a) butanoic acid and 1-propanol b) butanoic acid and propanoic acid c) 1-butanol and 1-propanol d) 1-butanol and propanoic acid 16- What is the product(s) of the reaction shown below? a) 1-propanol and ethanoic acid b) methanol and propanoic acid c) ethanol and propanoic acid d) methyl and ethanoic acid 17- What kind of amine is this? a) primary amine b) secondary amine c) tertiary amine d) quaternary amine 18- What kind of amine are this compound? a) b) a) primary amine b) secondary amine c) tertiary amine d) quaternary amine 5

6 19- Write the formulas for the following amines a) 2-isopropylamine b) Ethylmethylbutylamine c) 3-methylaniline d) Cyclohexamine e) 3-bromoaniline f) Butylethylamine g) Ethylmethylamine h) ethyldimethylamine 20- Amides I- Write the structural formulas for each of the following amides: a) Propanamide (propionamide) b) Butanamide c) Benzamide d) 3-chloropentanamide e) Pentanamide f) Ethanamide (acetamide) II- The IUPAC name of this compound is a) pentanamide b) pentanamine c) butanamide d) butanamine 1 III- What is the IUPAC name for the following amide? a) methylamide b) 2-methylpropamide c) butamide d) 2-ethylbutamide O N H 2 1 Prof. Miguel A. Gutiérrez Martínez. marzo 13,

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