Under which circumstances are kp and kc equal for the reaction aa(g)+bb(g)⇌cc(g)+dd(g)?

When the no. of moles of reactant gases (a + b) = the no. of moles of product gases (c + d).

Explanation:

The relation between Kp and Kc is:

Kp = Kc(RT)∧Δn.

So, Kp = Kc, when Δn = zero.Δn is the difference between the no. of gas molecules in the products side and that in the reactants side.So, Δn = zero, when the no. of molecules of gases in the products side = the no. of molecules of gases in the reactants side which means (a + b) = (c + d).

4hours and 17 mins i think