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Homework answers / question archive / Calculate ΔS?rxn for the reaction 2NO(g)+O2(g)→2NO2(g) Substance S? (J/mol⋅K) NO2 240

Calculate ΔS?rxn for the reaction 2NO(g)+O2(g)→2NO2(g) Substance S? (J/mol⋅K) NO2 240

Chemistry

Calculate ΔS?rxn for the reaction 2NO(g)+O2(g)→2NO2(g)

Substance S? (J/mol⋅K)
NO2 240.0
O2 205.2
NO 210.8

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?S?rxn   = ?S?products - ?S? reactants

             = (2 x 240) - (2 x 210.8 + 205.2)

             = - 146.8 J/K mol

?S?rxn    = - 146.8 J/K mol

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