Problem: Consider the reaction at 298 K: 2 H2S(g) + SO2(g) → 3 S(s, rhombic) + 2 H2O(g) ΔG˚rxn = –102 kJIs the reaction more or less spontaneous under these conditions than under standard conditions?PH2S = 2.00 atm; PSO2 = 1.50 atm; PH2O = 0.0100 atm

FREE Expert Solution

Recall that ΔG and K are related to each other:

ΔG°rxn=-RTlnK


And the Kp expression for this reaction is: 

2 H2S(g) + SO2(g) → 3 S(s, rhombic) + 2 H2O(g) 


Kp=productsreactants=(PH2O)2(PH2S)2(PSO2)



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Problem Details

Consider the reaction at 298 K: 2 H2S(g) + SO2(g) → 3 S(s, rhombic) + 2 H2O(g) ΔG˚rxn = –102 kJ

Is the reaction more or less spontaneous under these conditions than under standard conditions?

PH2S = 2.00 atm; PSO2 = 1.50 atm; PH2O = 0.0100 atm

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