Answer:
a) [NH2]-,
b) [O]2-
c) [Cl]-
Explanation:
The conjugate base is the base member (X⁻) of a weak acid (HX). In other words, the conjugate base is the remaining substance due to the proton loss in the acid HX.
a) For NH₃, (HX; X: NH₂⁻), conjugate base is NH₂⁻. In the format, [NH2]-.
b) For OH⁻, (HX; X: O²⁻), conjugate base is O²⁻. In the format, [O]2-.
c) For HCl, (HX; X: Cl⁻), conjugate base is Cl⁻. In the format, [Cl]-.
