At a certain temperature and total pressure of 10 5 Pa, iodine vapour contains 40% by volume of I atoms I 2 (g) ⇌ 2I (g) Calculate K p for the equilibrium.

Question

Philoid · Accepted Answer

K_p value at equilibrium for reaction,

I₂ (g) ⇌2I (g)

is given as,

Given, 40% volume is occupied by I atoms.

∴ 60 % volume is occupied by I₂.

Let V be total volume, then volume occupied by I and I₂ are 0.4V and 0.6V respectively.

Partial pressure of I₂ = (60/100) × 10⁵ = 60 kPa

Partial pressure of I = (40/100) × 10⁵ = 40 kPa

Substituting in equation for K_p,

K_p = = 2.67 × 10⁴ KPa

At a certain temperature and total pressure of 105Pa, iodine vapour contains 40% by volume of I atomsI2 (g) ⇌2I (g)Calculate Kpfor the equilibrium.

At a certain temperature and total pressure of 10⁵Pa, iodine vapour contains 40% by volume of I atoms
I₂ (g) ⇌2I (g)

Calculate K_pfor the equilibrium.