Consider the decomposition of calcium carbonate carried out at 1 atm by two different…

CHEMISTRY · Subjective · CBSE · Chemistry · Thermodynamics · Thermodynamics

Problem

Consider the decomposition of calcium carbonate carried out at 1 atm by two different methods. Reaction 1: CaCO3(s)→CaO(s)+CO2(g)\mathrm{CaCO_3(s) \rightarrow CaO(s) + CO_2(g)} Reaction 2: CaCO3(s)→CaO(s)+CO2(aq)\mathrm{CaCO_3(s) \rightarrow CaO(s) + CO_2(aq)} (carbon dioxide dissolves in water) Without performing calculations, indicate which reaction has the more positive ΔS∘\Delta S^\circ value and briefly state the reason in one sentence.

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