Problem: The reactionSO2(g) + 2H2S(g) ⇋ 3S (s) + 2H2O(g) is the basis of a suggested method for removal of SO2, a pollutant that irritates airways causing coughing, from power-plant stack gases.The values below may be helpful when answering questions about the process.Calculate the equilibrium constant Kp for the reaction at a temperature of 298 K.

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We’re being asked to determine the equilibrium constant (K) at 298 K for the given reaction:

SO2(g) + 2 H2S(g) ⇋ 3 S(s) + 2H2O(g)



Step 1: Solve for Δrxn:


ΔG°rxn=ΔG°f, prod-ΔG°f, react

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Problem Details

The reaction

SO2(g) + 2H2S(g) ⇋ 3S (s) + 2H2O(g) 

is the basis of a suggested method for removal of SO2, a pollutant that irritates airways causing coughing, from power-plant stack gases.

The values below may be helpful when answering questions about the process.

Calculate the equilibrium constant Kp for the reaction at a temperature of 298 K.

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