Question

Tick (✔) the most appropriate answer.

Carbon dioxide dissolves in water to form:

• A. sulphuric acid
• B. hydrochloric acid
• C. carbon monoxide
• D. carbonic acid

Answer 1

The correct option is D

carbonic acid

The explanation for the correct option:

(D) Carbonic acid

• Carbon dioxide dissolves in water to form Carbonic acid which is a weak acid.

The balanced chemical equation is as follows:

$\underset{\mathrm{Dioxide}}{\underset{\mathrm{Carbon}}{{\mathrm{CO}}_2\left(\mathrm{g}\right)}}+\underset{\mathrm{Water}}{{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}\to \underset{\mathrm{Acid}}{\underset{\mathrm{Carbonic}}{{\mathrm{H}}_2{\mathrm{CO}}_3\left(\mathrm{aq}\right)}}$

Therefore, option (D) is the correct option, Carbon dioxide dissolves in water to form Carbonic acid.