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If KC of a reaction N2(g) + O2(g) \(\rightleftharpoons\) 2NO(g) is 2 x 10^-3, then what is the KP?(a) 4 x 10^-3(b) 1 x 10^-3(c) 3 x 10^-3(d) 2 x 10^-3I had been asked this question by my school principal while I was bunking the class.This interesting question is from Homogeneous Equilibria in section Equilibrium of Chemistry – Class 11

Answer»

The CORRECT choice is (d) 2 x 10^-3

For EXPLANATION: As we know that KC = KP(RT)^Δng, here Δng = moles of PRODUCTS – moles of reactants which are in gaseous state only = 2 – (1+1) = 0. So KC = KP(RT)^0, KC = KP(1) = KP; KC = KP, therefore KP is same as KC and KP is 2 x 10^-3.


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