Question

Consider the following reaction:

Identify A and B from the given options:

• A. A — Methanol, B — Potassium formate
• B. A — Ethanol, B — Potassium formate
• C. A — Methanal, B — Ethanol
• D. A — Methanol, B — Potassium acetate

Hint:

In decarboxylation reactions, heating in the presence of a strong base often results in the formation of alcohols and formates.

Answer 1

The Correct Option is A

The reaction described is a typical decarboxylation reaction where formic acid (\( \text{HCOOH} \)) undergoes reduction in the presence of concentrated KOH. When heated, formic acid decarboxylates, resulting in methanol (CH$_3$OH) and potassium formate (HCOOK). The reaction proceeds as follows:
1. The formic acid is treated with concentrated KOH.
2. The hydroxide ion attacks the carbonyl group of the formic acid, leading to the formation of potassium formate and the liberation of carbon dioxide.
3. The remaining product after decarboxylation is methanol.
Decarboxylation of formic acid yields methanol and potassium formate.