Question

If for a certain reaction Δ_rH is 30 kJ mol^–1 at 450 K, the value of Δ_rS (in JK^–1 mol^–1) for which the same reaction will be spontaneous at the same temperature is

(1) –70 

(2) 70

(3) –33 

(4) 33

Answer 1

Minium Gibb's free energy required ∆ G=0

∆ H= t. ∆ s

∆s=∆H/t

=30, 000/450

∆s= 66.66 ~70

Answer 2

70 I saw the answer in doubtnut