At 298 K , calculate the solubility of metal sulfide, MS(s), in a saturated solution of H2 S where the concentration of H2 S and pH are maintained at 0.1 M and 3.0 , respectively Given at 298 K, arrayll H2 S(aq)+H2 O() H3 O+(aq)+HS-(aq) & K=10-7 \\ MS(s)+H2 O() M2+(aq)+HS-(aq)+OH-(aq) & K=5 10-19 array

ABC26PH0744 · Ionic Equilibrium

Subject: Physical Chemistry · Chapter: Ionic Equilibrium · Topic: Ionic Equilibrium – General · Exam: JAM 2001-2022 · Marks: 2 · Difficulty: Hard

At 298 K , calculate the solubility of metal sulfide, $\mathrm{MS}(\mathrm{s})$, in a saturated solution of $\mathrm{H}_{2} \mathrm{S}$ where the concentration of $\mathrm{H}_{2} \mathrm{S}$ and pH are maintained at 0.1 M and 3.0 , respectively Given at 298 K,

\[ \begin{array}{ll} \mathrm{H}_{2} \mathrm{S}(\mathrm{aq})+\mathrm{H}_{2} \mathrm{O}(\ell) \rightleftharpoons \mathrm{H}_{3} \mathrm{O}^{+}(\mathrm{aq})+\mathrm{HS}^{-}(\mathrm{aq}) & \mathrm{K}=10^{-7} \\ \mathrm{MS}(\mathrm{s})+\mathrm{H}_{2} \mathrm{O}(\ell) \rightleftharpoons \mathrm{M}^{2+}(\mathrm{aq})+\mathrm{HS}^{-}(\mathrm{aq})+\mathrm{OH}^{-}(\mathrm{aq}) & \mathrm{K}=5 \times 10^{-19} \end{array} \]

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