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# Problem: Calculate ΔS˚rxn for the balanced chemical equation2 H2S(g) + 3 O2(g)  →  2 H2O(g) + 2 SO2(g)Standard enthalpies for selected substances at 25oC SubstanceΔS˚ (J/(mol•K))O2(g)205.2SO2(g)248.2SO3(g)256.8H2O(g)188.8H2S(g)205.8

###### FREE Expert Solution

We are asked to calculate ΔS˚rxn for the balanced chemical equation 2 H2S(g) + 3 O2(g)  →  2 H2O(g) + 2 SO2(g)

Calculate ΔS˚rxn using the equation below:

Values needed:

S˚ of H2S(g)  = 205.8 J/(mol•K)

S˚ of O2(g)  = 205.2 J/(mol•K)

S˚ of H2O(g)  = 188.8 J/(mol•K)

S˚ of SO2(g)  = 248.2 J/(mol•K)

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###### Problem Details

Calculate ΔS˚rxn for the balanced chemical equation

2 H2S(g) + 3 O2(g)  →  2 H2O(g) + 2 SO2(g)

Standard enthalpies for selected substances at 25o

 Substance ΔS˚ (J/(mol•K)) O2(g) 205.2 SO2(g) 248.2 SO3(g) 256.8 H2O(g) 188.8 H2S(g) 205.8

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