Concept explainers
(a)
Interpretation:
The reaction of phenyl acetic acid with given reagents should be completed.
Concept Introduction:
Phenylacetic acid contains one −COOH group with molecular formula C6 H5 -CH2 -COOH. Carboxylic acids react with base to form salt and water. This reaction is called as neutralization reaction. The reduction of
Answer to Problem 42P
Explanation of Solution
The reaction of C6 H5 -CH2 -COOH with sodium carbonate forms sodium salt of C6 H5 -CH2 -COOH with water and carbon dioxide gas.
(b)
Interpretation:
The reaction of phenyl acetic acid with given reagents should be completed.
Concept Introduction:
Phenylacetic acid contains one −COOH group with molecular formula C6 H5 -CH2 -COOH. Carboxylic acids react with base to form salt and water. This reaction is called as neutralization reaction. The reduction of carboxylic acid form carbonyl compounds and alcohols whereas reaction with alcohol forms ester.
Answer to Problem 42P
Explanation of Solution
The reaction of C6 H5 -CH2 -COOH with sodium hydroxide forms sodium salt of C6 H5 -CH2 -COOH with water. This is a neutralization reaction as carboxylic acid reacts with base to form salt.
(c)
Interpretation:
The reaction of phenyl acetic acid with given reagents should be completed.
Concept Introduction:
Phenylacetic acid contains one −COOH group with molecular formula C6 H5 -CH2 -COOH. Carboxylic acids react with base to form salt and water. This reaction is called as neutralization reaction. The reduction of carboxylic acid form carbonyl compounds and alcohols whereas reaction with alcohol forms ester.
Answer to Problem 42P
Explanation of Solution
The reaction of C6 H5 -CH2 -COOH with ammonia solution forms ammonium salt of C6 H5 -CH2 -COOH that is ammonium phenyl acetate.
(d)
Interpretation:
The reaction of phenyl acetic acid with given reagents should be completed.
Concept Introduction:
Phenylacetic acid contains one −COOH group with molecular formula C6 H5 -CH2 -COOH. Carboxylic acids react with base to form salt and water. This reaction is called as neutralization reaction. The reduction of carboxylic acid form carbonyl compounds and alcohols whereas reaction with alcohol forms ester.
Answer to Problem 42P
Explanation of Solution
The reaction of C6 H5 -CH2 -COOH with lithium ammonium hydride followed by hydrolysis leads to formation of 2-phenylethanol. This is an example of reduction reaction and LiAlH4 is a reducing agent.
(e)
Interpretation:
The reaction of phenyl acetic acid with given reagents should be completed.
Concept Introduction:
Phenylacetic acid contains one −COOH group with molecular formula C6 H5 -CH2 -COOH. Carboxylic acids react with base to form salt and water. This reaction is called as neutralization reaction. The reduction of carboxylic acid form carbonyl compounds and alcohols whereas reaction with alcohol forms ester.
Answer to Problem 42P
C6 H5 -CH2 -COOH + NaBH4 / H2 O (No reaction.
Explanation of Solution
NaBH4 with water is a weak reducing agent therefore it cannot reduce the carboxylic acid and no reaction is observed with it.
(f)
Interpretation:
The reaction of phenyl acetic acid with given reagents should be completed.
Concept Introduction:
Phenylacetic acid contains one −COOH group with molecular formula C6 H5 -CH2 -COOH. Carboxylic acids react with base to form salt and water. This reaction is called as neutralization reaction. The reduction of carboxylic acid form carbonyl compounds and alcohols whereas reaction with alcohol forms ester.
Answer to Problem 42P
Explanation of Solution
Reaction of phenyl acetic acid with methanol in acidic medium as catalyst forms ester with water. This reaction is called as Fisher Esterification reaction.
(g)
Interpretation:
The reaction of phenyl acetic acid with given reagents should be completed.
Concept Introduction:
Phenylacetic acid contains one −COOH group with molecular formula C6 H5 -CH2 -COOH. Carboxylic acids react with base to form salt and water. This reaction is called as neutralization reaction. The reduction of carboxylic acid form carbonyl compounds and alcohols whereas reaction with alcohol forms ester.
Answer to Problem 42P
Explanation of Solution
H2 / Ni cannot reduce carboxylic acid group as it is reducing agent for
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Chapter 17 Solutions
Introduction To General, Organic, And Biochemistry
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- 2 (Chemical Connections 19A) Locate the ester group in pyrethrin I and draw a structural formula for chrysanthemic acid, the carboxylic acid from which this ester is derived.arrow_forward8 (Chemical Connections 19C) Once it has been opened, and particularly if it has been left open to the air, a bottle of aspirin may develop a vinegar-like odor. Explain how this might happen.arrow_forward17-35 Suppose that you take a bottle of benzaldehyde (a liquid, bp 179°C) from a shelf and find a white solid in the bottom of the bottle. The solid turns litmus red; that is, it is acidic. Yet aldehydes are neutral compounds. How can you explain these observations?arrow_forward
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage LearningOrganic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning