Answer
a. Any hydrogen-containing molecule or ion capable of releasing a proton. Example: $HCl$
b. Compound formed when its related acid donates a proton. Example: $Cl^-$
c. Any molecule or ion that can accept a proton. Example: $NH_3$
d. Compound formed when its related base receives a proton. Example: $NH{_4}^+$
e. Two species that differ by a proton $H^+$. Example: $NH_3$ and $N{H_4}^+$
Work Step by Step
See Section 10-4, page 350.