Question

According to Bronsted-Lowry, a conjugate base is:

• A. A base that forms when an acid loses an electron.
• B. A base that forms when an acid gains a proton.
• C. A base that forms when an acid gains an electron.
• D. A base that forms when an acid loses a proton.
• E. A base that forms from the neutralization of an acid.

Answer 1

The correct option is D A base that forms when an acid loses a proton.

According to Bronsted-Lowry, a conjugate base is a base that forms when an acid loses a proton.
Conjugate acid base pairs differ by a proton. For example, HCl (an acid) loses a proton to for chloride ion which is conjugate base of HCl
$HCl\to H^{+}+C{l}^{-}$