Question

Draw the condensed structural or line-angle formulas for the products from the hydrolysis of each of the following amides with HCl:

a)

b)

c)

d)

e)

Short answer

(part a) The structural formulas are, ${\mathrm{CH}}_3\mathrm{COOH}\text{and}{\mathrm{NH}}_4\mathrm{Cl}$

(part b) The structural formulations are ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{COOH}\text{and}{\mathrm{NH}}_4\mathrm{Cl}\text{.}$

(part c) The structural formulations are ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{COOH}\text{and}{\mathrm{CH}}_3{\mathrm{NH}}_3^{+}\mathrm{Cl}$

(part ) The structural formulations are ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{COOH}\text{and}{\mathrm{NH}}_4{}^{+}\mathrm{Cl}\text{.}$

(part e)The structural formulations are ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{COOH}\text{and}{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{NH}}_3{{}^{+}\mathrm{Cl}}^{-}$

Step-by-step solution

Step - 1  Introduction (part a)

• Amides are carboxylic acid derivatives in which the hydroxyl group has been replaced with an amine.
• Amide is made when a carboxylic acid combines with a substrate in a process known as "Amidation."
• A water molecule is removed in this reaction, and the carboxylic acid and amine molecules unite to produce the amide.

• Amides are divided by a hydrolysis reaction in which a water molecule is added to the amide.
• The hydrolysis products of $\mathrm{HCl}$are carboxylic acid and the ammonic salt.

Step - 2 Given information (part-a)

When ethanamide is hydrolyzed in an acid, it produces ethanoic acid and ammonium chloride.

step - 3 Explanation (part- a)

a)

• As a result, the products' condensed structural formulas are,

${\mathrm{CH}}_3\mathrm{COOH}\text{and}{\mathrm{NH}}_4\mathrm{Cl}\text{.}$

Step - 4  Given information (part-b)

Propanamide is converted to propanoic acid and ammonium chloride when it is hydrolyzed in acid.

Step - 5   Given information (part-b)

• As a result, the product's condensed structural formulations are

${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{COOH}\text{and}{\mathrm{NH}}_4\mathrm{Cl}\text{.}$

Step - 6 Given information (part-c)

Acid hydrolysis of N-methylbutanamide produces butanoic acid and methylammonium chloride.

Step - 7  Explanation (part- c)

• As a result, the product's condensed structural formulations are ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{COOH}\text{and}{\mathrm{CH}}_3{\mathrm{NH}}_3{}^{+}\mathrm{Cl}\text{.}$

Step- 8  Given information (part-d)

When benzamide is destroyed in acid, benzoic acid and ammonium chloride are produced.

Step - 9  Explanation (part-d)

As a result, the condensed structural formulas are as follows:

${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{COOH}\text{and}{\mathrm{NH}}_4{}^{+}\mathrm{Cl}$

Step - 10  Given information (part-e)

Acid hydrolysis of N-ethylpentanamide produces pentanoic acid and ethylammonium chloride

Step - 11 Explanation (part-e)

• As a result, the condensed structural formulas are as follows:

${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{COOH}\text{and}{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{NH}}_3{{}^{+}\mathrm{Cl}}^{-}$