Calculate Kp for the following reaction

Question

Calculate K_p for the following reaction: 

3 O₂(g) <=> 2 O₃(g); 

K_c = 545 at 33 ^oC 

 Give your answer to 3 decimal places.

Answer 1

Kp = Kc (RT)^∆n

where ∆n is the change in the number of moles from reactants to products = 2 - 3 = -1

R = gas constant = 0.0821 Latm/Kmol

T = 33º + 273 = 306K

Kc = 545

Kp = 545(0.0821 x 306)^-1

Kp = 545 x 0.0398

Kp = 21.7