The enthalpy and entropy change for a chemical reaction are -2500 cal and +7.4 cal/K, respectively. — Thermodynamics and Thermochemistry Chemistry Question
Question
The enthalpy and entropy change for a chemical reaction are -2500 cal and +7.4 cal/K, respectively. The nature of reaction at 298 K is
Answer: A
💡 Solution & Explanation
Δ G = Δ H - T * Δ S = -2500 - 298 * (+7.4) = -2500 - 2205.2 = -4705.2 cal. Since Δ G < 0, the reaction is spontaneous at 298 K.
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