Question

Which reaction is not affected by change in pressure?
(a) H₂ + I₂ ⇋ 2HI (b) 2C + O₂ ⇋ 2CO
(c) N₂ + 3H₂ ⇋ 2NH₃ (d) PCl₅ ⇋ PCl₃ + Cl₂

Answer 1

option (a)'s reaction. will not get affected by change in pressure coz. they have equal number of moles in gaseous state

Answer 2

The following reaction is not affected by change in pressure :

(a) H₂ + I₂ ⇋ 2HI

1. The reason is that , in this reaction moles of reactants = 1+1 = 2 and moles of products = 2.

2. Thus, there is no change in the number of moles in this reaction.

3. Thus, with change of pressure , there will be no change produced in this reaction.