Question

For a particular reversible reaction at temperature T, DH and DS were found to be both +ve. If T_e is the temperature at equilibrium, the reaction would be spontaneous when

(1) T_e > T

(2) T > T_e 

(3) T_e is 5 times T

(4) T = T_e 

Answer 1

(2) 

ΔG = ΔH- TΔS

at equilibrium, ΔG = 0

for a reaction to be spontaneous ΔG should be negative

T > T_e