Calculate Δ S for the reaction:
SO₃( g ) + CaO( s ) → CaSO₄( s )
Δ S in J/mol K for: CaO( s ) = 40, SO₃( g ) = 256.6, CaSO₄( s ) = 107

Question

Calculate Δ S for the reaction: SO₃( g ) + CaO( s ) → CaSO₄( s ) Δ S in J/mol K for: CaO( s ) = 40, SO₃( g ) = 256.6, CaSO₄( s ) = 107

Quizplus · Accepted Answer

The change in entropy (ΔS) for a reaction can be calculated using the formula ΔS = ΣS(products) - ΣS(reactants). For this reaction, ΔS = [107 J/mol K] - [256.6 + 40 J/mol K] = 107 - 296.6 = -189.6 J/mol K, which rounds to -190 J/K.

Calculate Δ S for the Reaction