Question

Vinegar is a solution of ethanoic acid made by the reaction of ethanol with air. Which gas in air takes part in this reaction?

• A. Carbon dioxide
• B. Nitrogen
• C. Oxygen
• D. Water vapour

Answer 1

The correct option is C

Oxygen

Explanation of the correct option:
Option C is correct:
1. Ethanol, also known as Ethyl alcohol has the chemical formula $C_2{H}_{5}OH$.
2. When Ethanol undergoes oxidation (reacts with Oxygen), it forms Ethanoic acid or Vinegar as an end product.
3. The reaction is given below:
${\text{CH}}_3{\text{CH}}_2\text{OH (l)}+{\text{O}}_2\left(g\right)\to {\text{CH}}_3\text{COOH (l)}+{\text{H}}_2\text{O (l)}$

Hence, option C is correct.

The gas that takes places in the Vinegar formation is Oxygen.