Question

question 18 of 30 which functional group does formic acid contain? a. —cooh b. —oh c. —o— d. —coo—

Explanation:

Formic acid has the chemical formula \( HCOOH \). The functional group in carboxylic acids (like formic acid) is the carboxyl group, represented as \( -\text{COOH} \). Option A is \( -\text{COOH} \), which matches the carboxyl group of formic acid. Option B (\( -\text{OH} \)) is a hydroxyl group (alcohol), Option C (\( -\text{O}- \)) is an ether group, and Option D (\( -\text{COO}- \)) is an ester group. So the correct answer is A.

Answer:

A. \( -\text{COOH} \)