Adsorption of a gas on solid metal surface is spontaneous and exothermic, then :

Question

Verified by Toppr

Answer 1

Adsorption of a gas on solid metal surface is spontaneous and exothermic, then $Δ S$ decreases.
Since for spontaneous and exothermic process, $Δ G = - v e, Δ H = - v e$ at all temperatures.

Therefore, from $Δ G = Δ H - T Δ S, Δ S$ should be $- v e$ .

Also, adsorption of gas on solid surface gives more orderly arrangement.

Answer 2

Adsorption of a gas on solid metal surface is spontaneous and exothermic, then

Δ S

decreases.

Since for spontaneous and exothermic process,

Δ G = - v e, Δ H = - v e

at all temperatures.

Therefore, from

Δ G = Δ H - T Δ S, Δ S

should be

- v e

.

Also, adsorption of gas on solid surface gives more orderly arrangement.