The equilibrium composition for the reaction PCl3 + Cl2 ⇌ PCI5, at 298 K is given below.
[PCl3]eq = 0.2 mol L-1
[Cl2]eq = 0.1 mol L-1,
[PCl5]eq = 0.40 mol L-1
If 0.2 mol of Cl2 is added at the same temperature, the equilibrium concentrations of PCl5 is _____ × 10-2 mol L-1.
Given: Kc for the reaction at 298 K is 20
