Question

The reaction of bromine gas with chlorine gas, shown here, has a Kc value of 7.20 at 200ºC. If a closed vessel was charged with the two reactants, each at an initial concentration of 0.200 M, but with no initial concentration of BrCl, what would be the equilibrium concentration of BrCl(g)?

                                           Br2(g) + Cl2(g)= 2BrCl(g)              K = 7.20
Initial Concentrations         0.20        0.20        0