Question

Ag2O(s) —> 2Ag(s)+(1/2)O2(g)

Delta H,Delta S and T are "40.63kJ/mol;108.8J/K mol, 373.4K respectively.Predict the feasibility of the reaction

(a) feasible
(b) non-feasible
(c) remains at equilibrium
(d) not predicted​

Answer 1

The correct answer is b.

Explanation:

The calculation can be done with the help of Gibb's free energy equation.

ΔG=ΔH−TΔS

To keep the units identical, ΔH is changed from kJ/mol to J/mol.

Converting kJ/mol to J/mol by multiplying 1000 with ΔH

40.63⋅1000=40630 J/mol

calculation:

ΔG=40630−373.4⋅108.8

ΔG=40630−40625.9=4.1 J/mol

A small increase in temperature would make this reaction a forward reaction as the  ΔG is barely positive.