Question

Which of the following is an Organic acid?

• A. Formic Acid
• B. Nitric Acid
• C. Sulfurous Acid
• D. Hydrochloric Acid

Answer 1

The correct option is A

Formic Acid

Explanation for correct option:

A. Formic acid

Organic acid:

• An organic acid is an organic compound with acidic properties.
• The most common organic acid is carboxylic acid and it contain a carboxyl group $\left(-\mathrm{COOH}\right)$.
• Examples of organic acid are formic acid and lactic acid.

Formic acid:

• Formic acid is an organic acid with having chemical formula $\mathrm{HCOOH}$.
• The structure of formic acid is given below:

Explanation for incorrect options:

Nitric acid $\left({\mathrm{HNO}}_3\right)$, Sulfurous acid $\left({\mathrm{H}}_2{\mathrm{SO}}_3\right)$ and Hydrochloric acid $\left(\mathrm{HCl}\right)$are inorganic acids as they do not contain a carboxyl $\left(-\mathrm{COOH}\right)$ functional group. Thus options B, C, and D stand incorrect.

Hence, the correct option is A i.e. formic acid.