A process has Δ H = 200 J mol-1 and Δ S = 40 JK-1 mol-1. Out of the values given below, choose the minimum temperature above which the process will be spontaneous :

Question

A process has Δ H = 200 J mol-1 and Δ S = 40 JK-1 mol-1. Out of the values given below, choose the minimum temperature above which the process will be spontaneous : (A) 5 K (B) 4 K (C) 20 K (D) 12 K

Tardigrade Admin · Accepted Answer

Δ G = Δ H -TΔ S T = (Δ H/Δ S) = (200/40) = 5K

Q. A process has $Δ H = 200 J m o l^{- 1}$ and $Δ S = 40 J K^{- 1} m o l^{- 1}$ . Out of the values given below, choose the minimum temperature above which the process will be spontaneous :

$5 K$

$4 K$

$20 K$

$12 K$

$Δ G = Δ H - T Δ S$
$T = \frac{Δ H}{Δ S} = \frac{200}{40} = 5 K$

Q. A process has ΔH=200Jmol−1 and ΔS=40JK−1mol−1. Out of the values given below, choose the minimum temperature above which the process will be spontaneous :

5K

4K

20K

12K