Question

Consider the following reactions,

(a) H₂(g) + I₂(g) ⇄ 2HI(g) 

(b) CaCO₂(s) ⇄ CaO(s) + CO₂(g) 

(c) S(s) + 3F₂(g) ⇄ SF₆(g)

In each of the above reaction find out whether you have to increase (or) decrease the volume to increase the yield of the product?

Answer 1

(a) H₂(g) + I₂2(g) ⇄ 2HI(g)

In the above equilibrium reaction, volume of gaseous mdlecules is equal on both sides. So increase or decrease the volume will not affect the equilibrium and there will be no change in the yield of product.

Volume is greater in product side. By decreasing the pressure, volume will increase thus, to get more of product CO₂, the pressure should be decreased or volume should be increased.

Volume is lesser in product side. So by increasing the pressure, equilibrium shifts to the product side.