1) Determine the value of Kc for the following reaction if the equilibrium conce

Question

1) Determine the value of Kc for the following reaction if the equilibrium concentrations are as follows: [P4O10]eq = 2.000 moles, [P4]eq = 3.000 moles, [O2]eq = 4.000 M P4O10(s) P4(s) + 5 O2(g)

I know the answer is 4^5 =1024 but I am confused why some parts are in moles and the oxygen is in M (concentration) would the same rules apply if the all the variables were given in moles? Could I still solve the problem using the same equilibrium constant rules? or would there be more to it?

Thanks for the help!

Explanation / Answer

Your answer is absolutely correct .

In writing equilibrium constant expression the concentration of solids is always taken as unity .that is the reason y it is given in moles , where as O2, is gas and concentration of O2 gas must be considered .that's y it is given in moles/L(I.e,M).

Suppose if only moles were given in problem ,we need volume of the container also .

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