Question

At certain temperature and under a pressure of 4 atm, PCl₅ is 10% dissociated. Calculate the pressure at which PCI₅ will be 20% dissociated at temperature remaining constant.

Calculation of K_P

Answer 1

Total no. of moles in the equilibrium mixture = 1 – α + α + α = (1 + α) mol.

Let the total pressure of equilibrium mixture = p atm

calculation of P under new condition