Calculate the standard entropy of reaction at 25 ?C for the decomposition of calcium carbonate: CaCO3(s)?CaO(s)+CO2(g)...

Question

Question

Calculate the standard entropy of reaction at 25 ?C for the decomposition of calcium carbonate:
CaCO3(s)?CaO(s)+CO2(g)

science chemistry

Answer 1

Answer #1

The entropy of the reaction is given as

Entropy (rxn) = Entropy(Products) - Entropy(reactants)

Entropy(Products) = Entropy(CaO) + Entropy(CO2)

=> 39.7 + 213.6 [data taken from net]

=> 253.3 J/K mol

Entropy (Reactants) = Entropy(CaCO3)

=>92.9 J/K mol

Net Entropy of Reaction = 253.3 - 92.9 = 160.4 J/K mol

Answer 2

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