Question

The molar concentrations for the reactants and products at equilibrium are found to be [HCl] = 0.80 M, [O2] = 0.20 M, [Cl2] = 3.0 M, and H2O = 3.0 M. What is the value of the equilibrium constant for this reaction? the complete reaction is 4HCl+O2=2Cl2+2H2O i got this answer but it tells me its wrong where did I go wrong with my computation pls check:
Kc= [3.0][3.0]2/[0.80]4[0.20]=329.58 pls kindly my computation

Answer 1

Both 3.0 values should be squared since both have coefficients of 2.

Answer 2

602 x 10 24

Answer 3

1.431