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Question 9

Write the relation between Kc and Kp for the following reactions:
(a) N2(g) + 3H2(g) = 2NH3(g)

(b) 2SO2(g) = O2(g) + 2SO2(g)

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1 Answer

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(a) We have Kc = [NH3]2 / [N2] [H2]3

Kp = P2NH3 / PN2 P3H2

Now we know the relationship between Kp and Kc.
Kp = Kc(RT)Δn

Δn = 2-(1+3) = -2

Kp = Kc/ (RT)2

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