## Chemistry 12th Edition

1. Identify if each ion is a strong or weak acid or base, or if it does not hydrolyze. (a) $K^+$ does not hydrolyze (Conjugate acid from strong base: KOH) $Br^-$ does not hydrolyze (Conjugate base from strong acid: HBr) (b) $Al^{3+}$ hydrolyzes to produce $H^+$ (Small metal ion with high charge) $NO_3^-$ does not hydrolyze (Conjugate base from strong acid: $HNO_3$) (c) $Ba^{2+}$ does not hydrolyze (Conjugate acid from strong base: $Ba(OH)_2$) $Cl^-$ does not hydrolyze (Conjugate base from strong acid: HCl) (d) $Bi^{3+}$ hydrolyzes to produce $H^+$ (Small metal ion with high charge) $NO_3^-$ does not hydrolyze (Conjugate base from strong acid: $HNO_3$) 2. If neither the anion nor the cation hydrolyzes, the pH of the aqueous solution will be neutral (7). If the solution will produce only $H^+$, the aqueous solution will be acidic: pH < 7. (a) Neutral: pH = 7 (b) Acidic: pH < 7 (c) Neutral: pH = 7 (d) Acidic: pH < 7