In which of the following reaction, the value of Kp will be equal to Kc
H2 + I2 ⇌ 2HI
PCl5 ⇌ PCl3 + Cl2
2NH3 ⇌ N2 + 3H2
2SO2 + O2 ⇌ 2SO3
if np = nr then KP = KC
where np = no. of moles of product
nr = no. of moles of reactant.