Question

question
a conjugate acid is described by which of the following?
select the correct answer below:
a conjugate acid is always a proton donor.
a conjugate acid is an acid containing exactly one ionizable hydrogen atom per molecule.
a conjugate acid is the compound formed when a base gains a proton.
none of the above

Explanation:

According to the Brønsted - Lowry theory, a conjugate acid is formed when a base gains a proton (\(H^+\)).

• Option 1: A conjugate acid can act as a proton donor (behave as an acid) in another reaction, but this is not the definition of a conjugate acid.
• Option 2: The number of ionizable hydrogen atoms per molecule is not the definition of a conjugate acid.
• Option 3: This is in line with the Brønsted - Lowry definition of a conjugate acid.

Answer:

A conjugate acid is the compound formed when a base gains a proton.