Question

2 ml of ethanoic acid was taken in each of the three test tubes A, B and C. To these test tubes 2 ml, 4 ml and 8 ml of water was added respectively. Which test tube should contain a clear solution?

• A. A
• B. B
• C. Both A and B
• D. All three test tubes

Answer 1

The correct option is D All three test tubes

Ethanoic acid has a methyl group attached to the carboxylic group $(-COOH)$. The polar carboxylic group interacts with polar water molecules. As the size of the non-polar alkyl group is very small in ethanoic acid, it dissolves in water in all proportions. Thus, all the test tubes have a clear solution.