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Solution: Given the values of ΔH∘rxn, ΔS∘rxn, and T below, determine ΔSuniv. a) ΔH∘rxn = 87 kJ , ΔS∘rxn = 146 J/K , T= 296 K, will this be spontaneous or not spontaneous? b) ΔH∘rxn = 87 kJ , ΔS∘rxn = 146 J/K , T= 762 K, will this be spontaeous or not spontaneous? c) ΔH∘rxn = 87 kJ , ΔS∘rxn = −46 J/K , T= 296 K, will this be spontaneous or not spontaneous? d) ΔH∘rxn = −87 kJ , ΔS∘rxn = 146 J/K , T= 390 K, will this be spontaneous or not spontaneous?

Problem

Given the values of ΔHrxn, ΔSrxn, and T below, determine ΔSuniv.

a) ΔHrxn = 87 kJ , ΔSrxn = 146 J/K , T= 296 K, will this be spontaneous or not spontaneous?

b) ΔHrxn = 87 kJ , ΔSrxn = 146 J/K , T= 762 K, will this be spontaeous or not spontaneous?

c) ΔHrxn = 87 kJ , ΔSrxn = −46 J/K , T= 296 K, will this be spontaneous or not spontaneous?

d) ΔHrxn = −87 kJ , ΔSrxn = 146 J/K , T= 390 K, will this be spontaneous or not spontaneous?