Homework Help: chem

Posted by tracy on Monday, November 19, 2012 at 4:45pm.

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

chem - DrBob222, Monday, November 19, 2012 at 11:03pm
Both 3.0 values should be squared since both have coefficients of 2.

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