Question

K_c for the reaction is 61.7 at 60°C. What is its unit? Calculate K_p for the reaction and write its unit.

Answer 1

For given reaction unit of K_c is L mol-1 and with given coefficients, the unit is (L mol^-1)^1/2
K_p = K_c (RT)Δn
For given reaction, K_c = 61.7, R = 0.0821, T = 60 + 273 = 333 K
and Δn = number of moles of gaseous product – Number of moles of gaseous reactants Unit of K_p is atm and for given coefficients unit of K_p is atm^1/2 .