Find the appropriate equilibrium constant (Kp) for the reaction below under the

Question

Find the appropriate equilibrium constant (Kp) for the reaction below under the following conditions.

1/2 SNO2(s) + H2(g) <--> H2O(g) + 1/2 Sn(s)

a. At 650*C, The equilibrium steam-H2 mixture was 38% H2 by Volume.
b. At 800*C, The equilibrium steam-H2 mixture was 22% H2 by Volume.
c. Would you run this reaction at a high or low temperature for the most efficient reduction of Tin?

Please show step by step! I have an ice table for the first one kinda..but I don't know how to get anything out of the %. I am so confused. I know you don't include solids for a Keq though..please help..I really do need step by step for a and b please, not just a quick answer..

Explanation / Answer

(c) SnO2(s) + 2 H2(g) Sn(s) + 2 H2O(g Products/reactants. No solids or liquids. Remember coefficients: Kc= [H2O]^2/ [H2]^2

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