Chemistry

Chemistry

Problem

A student writes the following expression for the equilibrium NH4HS(s)⇌NH3(g)+H2S(g)\text{NH}_4\text{HS}(s) \rightleftharpoons \text{NH}_3(g) + \text{H}_2\text{S}(g) "Kp=(PNH3)(PH2S)PNH4HSK_p = \dfrac{(P_{\text{NH}_3})(P_{\text{H}_2\text{S}})}{P_{\text{NH}_4\text{HS}}}". Which revision most accurately reflects the correct form of KpK_p for this reaction? a) Kp=(PNH3)(PH2S)PNH4HSK_p = \dfrac{(P_{\text{NH}_3})(P_{\text{H}_2\text{S}})}{P_{\text{NH}_4\text{HS}}} b) Kp=(PNH3)2(PH2S)2K_p = (P_{\text{NH}_3})^2(P_{\text{H}_2\text{S}})^2 c) Kp=(PNH3)(PH2S)K_p = (P_{\text{NH}_3})(P_{\text{H}_2\text{S}}) d) Kp=(PNH3)2K_p = (P_{\text{NH}_3})^2

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