Question

Enthalpy change of a reaction is 30KJ and entropy change 300 per Kelvin per mol is the reaction is spontaneous at 50 Kelvin if not then what temperature it become spontaneous ​

Answer 1

Answer:

The change in Gibbs free energy associated with a chemical reaction is a useful indicator of whether the reaction will proceed spontaneously. When the free energy is negative, the reaction will be spontaneous.

ΔH=−150 Kcal mol

−1

ΔS=−7.2 cal mol

−1

K

−1

Gibb's free energy equation is

ΔG=ΔH−TΔS

ΔG=(−15×1000)−300×(−7.2)

ΔG=−12.8 Kcal$$

Above reaction will be spontaneous as the free energy is negative.