For the reaction N2+3H2⇌2NH3 and 12N2+32H2⇌NH3 write down the expression for equilibrium constant Kc and K′c. How is Kc related to K′c?
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Solution
For the equation N2+3H2⇌2NH3 Kc=[NH3]2[N2][H2]3...(1) For equation 12N2+32H2⇌NH3 K′c=[NH3][N2]1/2[H2]3/2...(2) Taking square of the expression for K′c, we get (K′c)2=[NH3]2[N2][H2]3 This is equal to the expression for Kc. Thus, Kc=(K′c)2 or √Kc=K′c