Question

Choose the statement below that is TRUE.
a. A weak acid solution consists of mostly non-ionized acid molecules.
b. The term "strong electrolyte" means that the substance is extremely reactive.
c. A strong acid solution consists of only partially ionized acid molecules.
d. The term "weak electrolyte" means that the substance is inert.
e. A molecular compound that does not ionize in solution is considered a strong electrolyte.

Answer 1

Answer: Option (a) is the correct answer.

Explanation:

A weak acid is defined as an acid that dissociates partially when dissolve in water or a polar solvent.

For example, acetic acid is a weak acid and when dissolved in water it dissociates partly into ions as follows.

         $CH_{3}COOH(aq) \rightleftharpoons CH_{3}COO^{-}(aq) + H^{+}(aq)$

And, a strong acid is defined as an acid which when dissolved in water dissociates completely into ions.

For example, HCl is a strong acid and when dissolved in water it dissociates completely.

       $HCl \rightarrow H^{+} + Cl^{-}$

Thus, we can conclude that the statement a weak acid solution consists of mostly non-ionized acid molecules, is true.