# Problem: At 500°C the equilibrium constant, Kp, is 4.00 x 10-4 for the equilibrium: 2HCN(g)  ⇋ H2(g) + C2N2(g) What is Kc for the following reaction? H2(g) + C2N2(g)  ⇋ 2HCN(g) A)  2.00 x 10-4                        B) -4.00 x 10-4            C) 1.25 x 103 D) 2.50 x 103                           E) 4.00 x 104

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At 500°C the equilibrium constant, Kp, is 4.00 x 10-4 for the equilibrium:

2HCN(g)  ⇋ H2(g) + C2N2(g)

What is Kc for the following reaction?

H2(g) + C2N2(g)  ⇋ 2HCN(g)

A)  2.00 x 10-4

B) -4.00 x 10-4

C) 1.25 x 103

D) 2.50 x 103

E) 4.00 x 104

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