In which of the following reactions will kc = kp? in which of the following reactions will kc = kp?
(a) so3(g) + no(g) ↔ so2(g) + no2(g)
(b) 2 n2(g) + o2(g) ↔ 2 n2o(g)
(c) 4 nh3(g) + 3 o2(g) ↔ 2 n2(g) + 6 h2o(g)
(d) 2 so2(g) + o2(g) ↔ 2 so3(g)
(e) none of the above reactions have kc = kp.

Option A

Explanation:

Since we have a relationship between KC and KP as given below

KP=KC(RT)^dn

dn= difference in the no of gaseous products and Reactants

For A,dn= 1+1-(1+1)= 2-2=0

KP=KC(RT)^0

KP=kc(1) since a^0=1

Hence KP=KC

For B,dn=2-(2+1)=2-3=-1, hence KP not equal to KC

For C, dn=2+6-(4+3)=8-7=1

For D,dn=2-3=-1, KP is not equal to KC

So option A is correct answer