(a) Interpretation: The product formed on reaction of phenylacetic acid when treated with Br 2 and one equivalent of PBr 3 , followed by large excess of ethanol is to be stated. Concept introduction: Carboxylic acid is a class of organic compound that contains a − COOH group attached with a hydrocarbon chain. Bromination occurs at α carbons of carboxylic acids on reaction with Br 2 and a catalytic amount of PBr 3 . This reaction is known as Hell-Volhard-Zelinsky reaction. The α carbon is the carbon adjacent to the carboxyl group.

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Answer 1

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Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 22, Problem 22.16P

Interpretation Introduction

(a)

Interpretation:

The product formed on reaction of phenylacetic acid when treated with Br2 and one equivalent of PBr3, followed by large excess of ethanol is to be stated.

Concept introduction:

Carboxylic acid is a class of organic compound that contains a −COOH group attached with a hydrocarbon chain. Bromination occurs at α carbons of carboxylic acids on reaction with Br2 and a catalytic amount of PBr3. This reaction is known as Hell-Volhard-Zelinsky reaction. The α carbon is the carbon adjacent to the carboxyl group.

Interpretation Introduction

(b)

Interpretation:

The product formed on reaction of propionic acid when treated with Br2 and one equivalent of PBr3, followed by large excess of ammonia is to be stated.

Concept introduction:

Carboxylic acid is a class of organic compound contains a −COOH group attached with a hydrocarbon chain. Bromination occurs at α carbons of carboxylic acids on reaction with Br2 and a catalytic amount of PBr3. This reaction is known as Hell-Volhard-Zelinsky reaction. The α carbon is the carbon adjacent to the carboxyl group.

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Experiment: Each team will be provided with 5g of a mixture of acetanilide and salicylic acid. You will divide it into three 1.5 g portions in separate 125 mL Erlenmeyer flasks savıng some for melting point analysis. Dissolve the mixture in each flask in ~60mL of DI water by heating to boiling on a hotplate. Take the flasks off the hotplate once you have a clear solution and let them stand on the bench top for 5 mins and then allow them to cool as described below. Sample A-Let the first sample cool slowly to room temperature by letting it stand on your lab bench, with occasional stirring to promote crystallization. Sample B-Cool the second sample 1n a tap-water bath to 10-15 °C Sample C-Cool the third sample in an ice-bath to 0-2 °C Results: weight after recrystalization and melting point temp. A=0.624g,102-115° B=0.765g, 80-105° C=1.135g, 77-108 What is the percent yield of A,B, and C.

Answer 2

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Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 22, Problem 22.16P

Interpretation Introduction

(a)

Interpretation:

The product formed on reaction of phenylacetic acid when treated with Br2 and one equivalent of PBr3, followed by large excess of ethanol is to be stated.

Concept introduction:

Carboxylic acid is a class of organic compound that contains a −COOH group attached with a hydrocarbon chain. Bromination occurs at α carbons of carboxylic acids on reaction with Br2 and a catalytic amount of PBr3. This reaction is known as Hell-Volhard-Zelinsky reaction. The α carbon is the carbon adjacent to the carboxyl group.

Interpretation Introduction

(b)

Interpretation:

The product formed on reaction of propionic acid when treated with Br2 and one equivalent of PBr3, followed by large excess of ammonia is to be stated.

Concept introduction:

Carboxylic acid is a class of organic compound contains a −COOH group attached with a hydrocarbon chain. Bromination occurs at α carbons of carboxylic acids on reaction with Br2 and a catalytic amount of PBr3. This reaction is known as Hell-Volhard-Zelinsky reaction. The α carbon is the carbon adjacent to the carboxyl group.

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Answer 3

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Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 22, Problem 22.16P

Interpretation Introduction

(a)

Interpretation:

The product formed on reaction of phenylacetic acid when treated with Br2 and one equivalent of PBr3, followed by large excess of ethanol is to be stated.

Concept introduction:

Carboxylic acid is a class of organic compound that contains a −COOH group attached with a hydrocarbon chain. Bromination occurs at α carbons of carboxylic acids on reaction with Br2 and a catalytic amount of PBr3. This reaction is known as Hell-Volhard-Zelinsky reaction. The α carbon is the carbon adjacent to the carboxyl group.

Interpretation Introduction

(b)

Interpretation:

The product formed on reaction of propionic acid when treated with Br2 and one equivalent of PBr3, followed by large excess of ammonia is to be stated.

Concept introduction:

Carboxylic acid is a class of organic compound contains a −COOH group attached with a hydrocarbon chain. Bromination occurs at α carbons of carboxylic acids on reaction with Br2 and a catalytic amount of PBr3. This reaction is known as Hell-Volhard-Zelinsky reaction. The α carbon is the carbon adjacent to the carboxyl group.

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Answer 4

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 22, Problem 22.16P

Interpretation Introduction

(a)

Interpretation:

The product formed on reaction of phenylacetic acid when treated with Br2 and one equivalent of PBr3, followed by large excess of ethanol is to be stated.

Concept introduction:

Carboxylic acid is a class of organic compound that contains a −COOH group attached with a hydrocarbon chain. Bromination occurs at α carbons of carboxylic acids on reaction with Br2 and a catalytic amount of PBr3. This reaction is known as Hell-Volhard-Zelinsky reaction. The α carbon is the carbon adjacent to the carboxyl group.

Interpretation Introduction

(b)

Interpretation:

The product formed on reaction of propionic acid when treated with Br2 and one equivalent of PBr3, followed by large excess of ammonia is to be stated.

Concept introduction:

Carboxylic acid is a class of organic compound contains a −COOH group attached with a hydrocarbon chain. Bromination occurs at α carbons of carboxylic acids on reaction with Br2 and a catalytic amount of PBr3. This reaction is known as Hell-Volhard-Zelinsky reaction. The α carbon is the carbon adjacent to the carboxyl group.

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Answer 5

Chapter 22, Problem 22.16P

Interpretation Introduction

(a)

Interpretation:

The product formed on reaction of phenylacetic acid when treated with Br2 and one equivalent of PBr3, followed by large excess of ethanol is to be stated.

Concept introduction:

Carboxylic acid is a class of organic compound that contains a −COOH group attached with a hydrocarbon chain. Bromination occurs at α carbons of carboxylic acids on reaction with Br2 and a catalytic amount of PBr3. This reaction is known as Hell-Volhard-Zelinsky reaction. The α carbon is the carbon adjacent to the carboxyl group.

Interpretation Introduction

(b)

Interpretation:

The product formed on reaction of propionic acid when treated with Br2 and one equivalent of PBr3, followed by large excess of ammonia is to be stated.

Concept introduction:

Carboxylic acid is a class of organic compound contains a −COOH group attached with a hydrocarbon chain. Bromination occurs at α carbons of carboxylic acids on reaction with Br2 and a catalytic amount of PBr3. This reaction is known as Hell-Volhard-Zelinsky reaction. The α carbon is the carbon adjacent to the carboxyl group.

Answer 6

Chapter 22, Problem 22.16P

Interpretation Introduction

(a)

Interpretation:

The product formed on reaction of phenylacetic acid when treated with Br2 and one equivalent of PBr3, followed by large excess of ethanol is to be stated.

Concept introduction:

Carboxylic acid is a class of organic compound that contains a −COOH group attached with a hydrocarbon chain. Bromination occurs at α carbons of carboxylic acids on reaction with Br2 and a catalytic amount of PBr3. This reaction is known as Hell-Volhard-Zelinsky reaction. The α carbon is the carbon adjacent to the carboxyl group.

Answer 7

Chapter 22, Problem 22.16P

Interpretation Introduction

(a)

Interpretation:

The product formed on reaction of phenylacetic acid when treated with Br2 and one equivalent of PBr3, followed by large excess of ethanol is to be stated.

Concept introduction:

Carboxylic acid is a class of organic compound that contains a −COOH group attached with a hydrocarbon chain. Bromination occurs at α carbons of carboxylic acids on reaction with Br2 and a catalytic amount of PBr3. This reaction is known as Hell-Volhard-Zelinsky reaction. The α carbon is the carbon adjacent to the carboxyl group.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The product formed on reaction of propionic acid when treated with Br2 and one equivalent of PBr3, followed by large excess of ammonia is to be stated.

Concept introduction:

Carboxylic acid is a class of organic compound contains a −COOH group attached with a hydrocarbon chain. Bromination occurs at α carbons of carboxylic acids on reaction with Br2 and a catalytic amount of PBr3. This reaction is known as Hell-Volhard-Zelinsky reaction. The α carbon is the carbon adjacent to the carboxyl group.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The product formed on reaction of propionic acid when treated with Br2 and one equivalent of PBr3, followed by large excess of ammonia is to be stated.

Concept introduction:

Carboxylic acid is a class of organic compound contains a −COOH group attached with a hydrocarbon chain. Bromination occurs at α carbons of carboxylic acids on reaction with Br2 and a catalytic amount of PBr3. This reaction is known as Hell-Volhard-Zelinsky reaction. The α carbon is the carbon adjacent to the carboxyl group.

Answer 10

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Answer 13

Ch. 22 - Prob. 22.1P Ch. 22 - Prob. 22.2P Ch. 22 - Prob. 22.3P Ch. 22 - Prob. 22.4P Ch. 22 - Prob. 22.5P Ch. 22 - Prob. 22.6P Ch. 22 - Prob. 22.7P Ch. 22 - Prob. 22.8P Ch. 22 - Prob. 22.9P Ch. 22 - Prob. 22.10P

Solution Summary: The author explains that the product formed on reaction of phenylacetic acid when treated with Br_2 and one equivalent of

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