Comment on the extent to which the forward reaction will proceed, from

1.	Comment on the extent to which the forward reaction will proceed, from the magnitude of the equilibrium constant for the following reactions :i. H2(g) + I2(g) ⇌ 2HI(g), KC = 20 at 550 Kii. H2(g) + Cl2(g) ⇌ 2HCl(g), KC= 1018 at 550 K
Answer» i. H_2(g) + I_2(g) ⇌ 2HI_(g), K_C = 20 at 550 K For the reaction, K_C = 20 at 550 K If the value of K_C is the range of 10^-3 to 10³, The forward and reverse proceed to equal extents. Hence, The given reaction will form appreciable concentrations of both reactants and the product at equilibrium. ii. H_2(g) + Cl_2(g) ⇌ 2HCl_(g), K_C= 10¹⁸ at 550 K For the reaction, K_C= 10¹⁸ at 550 K If the value of K_C >>> 10³, forward reaction is favoured. Hence, The given reaction will proceed in the forward direction and will nearly go to completion.

Comment on the extent to which the forward reaction will proceed, from the magnitude of the equilibrium constant for the following reactions :i. H2(g) + I2(g) ⇌ 2HI(g), KC = 20 at 550 Kii. H2(g) + Cl2(g) ⇌ 2HCl(g), KC= 1018 at 550 K

Answer»

i. H_2(g) + I_2(g) ⇌ 2HI_(g), K_C = 20 at 550 K

For the reaction,

K_C = 20 at 550 K

If the value of K_C is the range of 10^-3 to 10³,

The forward and reverse proceed to equal extents.

Hence,

The given reaction will form appreciable concentrations of both reactants and the product at equilibrium.

ii. H_2(g) + Cl_2(g) ⇌ 2HCl_(g), K_C= 10¹⁸ at 550 K

For the reaction,

K_C= 10¹⁸ at 550 K

If the value of K_C >>> 10³, forward reaction is favoured.

Hence,

The given reaction will proceed in the forward direction and will nearly go to completion.