Limestone is predominantly CaCO 3 , which can undergo the reaction CaCO 3 (s) CaO(s) CO 2 (g) We know from experience that this reaction is not spontaneous, yet S for the reaction is positive How can the second law of thermodynamics explain that this reaction is not spontaneous ...

Limestone is predominantly CaCO 3 , which can undergo the reaction CaCO 3 (s) CaO(s) +

Question:

Limestone is predominantly CaCO₃, which can undergo the reaction CaCO₃(s) → CaO(s) + CO₂(g). We know from experience that this reaction is not spontaneous, yet ΔS for the reaction is positive. How can the second law of thermodynamics explain that this reaction is not spontaneous?

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