Calcium carbonate decomposes according to CaCO₃(s) → CaO(s) + CO₂(g)

CHEMISTRY · Subjective · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry

Problem

Calcium carbonate decomposes according to CaCO₃(s) → CaO(s) + CO₂(g). Describe whether the entropy change ΔS° for this reaction is expected to be positive, negative, or approximately zero, and explain your reasoning in one sentence.

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