## General Chemistry: Principles and Modern Applications (10th Edition)

(a) $NO{_3}^-$ does not hydrolyze (Conjugate pair of a strong acid) $CH_3N{H_3}^+$ does (Conjugate acid of a weak base). Therefore, the solution will be acidic. (b)$I^-$ does not hydrolyze (Conjugate pair of a strong acid) $Na^+$ does not either (Conjugate pair of a strong base). Neither $Na^+$ nor $I^-$ hydrolyzes: Neutral solution. (c) $Na^+$ does not hydrolyze (Conjugate pair of a strong base) $N{O_2}^-$ does (Conjugate base of a weak acid). The solution will be basic.