Calculate ΔS°_rxn for the following reaction.The S^∘for each species is shown below the reaction. C₂H₂(g) + 2 H₂(g) → C₂H₆(g)
S°(J/mol∙K) 200.9 130.7 229.2

Question

Calculate ΔS°_rxn for the following reaction.The S^∘for each species is shown below the reaction. C₂H₂(g)+ 2 H₂(g)→ C₂H₆(g) S°(J/mol∙K)200.9 130.7 229.2

Quizplus · Accepted Answer

ΔS°_rxn = ∑[S°(products)] - ∑[S°(reactants)] = [2(130.7 J/mol∙K) + 229.2 J/mol∙K] - [200.9 J/mol∙K + 2(130.7 J/mol∙K)] = 233.1 J/K Note that the coefficients in the balanced equation do not affect the ΔS° value, so we do not need to multiply any of the S° values by the coefficients. Therefore, the correct answer is D, -233.1 J/K.

Calculate ΔS°rxn for the Following Reaction

Calculate ΔS°_rxn for the Following Reaction