The Total solution for NCERT class 6-12
A sample of pure PCl5 was introduced intoan evacuated vessel at 473 K. After equilibrium was attained, concentration ofPCl5 was found to be 0.5 × 10–1 mol L–1. If value of Kc is 8.3 × 10–3, what are theconcentrations of PCl3 and Cl2 at equilibrium?
Let the concentrations of both PCl3 and Cl2 at equilibriumbe x molL–1. The given reaction is:
Nowwe can write the expression for equilibrium as:
Therefore,at equilibrium,