Enthalpy change and entropy change of a chemical reaction are -10.5 kJ mol^(-1) and -31.5 JK^(-1) mol^(-1) respectively. Predict whether the reaction is spontaneous or not at 300 K.

Enthalpy change and entropy change of a chemical reaction are -10.5 kJ

1.	Enthalpy change and entropy change of a chemical reaction are -10.5 kJ mol^(-1) and -31.5 JK^(-1) mol^(-1) respectively. Predict whether the reaction is spontaneous or not at 300 K.
Answer» Solution :`Delta G = Delta H - T Delta S` Given, `Delta S = -315 JK^(-1) MOL^(-1)` and `Delta H = -10.5 xx 10^(3) J mol^(-1)` `:. Delta G = -10500 - 300(-31.5) = -1050 J mol^(-1)` SINCE `Delta G` is negative, the reaction would be spontaneous.