Question

Select the correct answer. Which statement describes the acid found in vinegar (acetic acid)? A. It tastes bitter. B. It feels slippery. C. It changes red litmus paper to blue. D. It reacts with Mg to produce H2. E. It releases OH- in a solution.

Answer 1

Answer: Option (D) is the correct answer.

Explanation:

The acetic acid, $(CH_{3}COOH)$ present in vinegar reacts wit magnesium and therefore, it releases hydrogen gas and magnesium acetate.

The chemical reaction will be as follows.

       $2CH_{3}COOH + 2Mg \rightarrow 2Mg(CH_{3}COO) + H_{2}$

An acid is a substance which has pH less than 7 and changes blue litmus red. Acids taste sour as they are acidic in nature and releases hydrogen ions.

Whereas bases have pH greater than 7 and changes red litmus into blue.Bases taste bitter and releases hydroxide ions.

Thus, we can conclude that the statement it reacts with Mg to produce $H_{2}$ best describes the acid found in vinegar (acetic acid).

Answer 2

Answer:

D. It reacts with Mg to produce H2.