In which of the following equilibria, the value of Kp is less than Kc?

Question

In which of the following equilibria, the value of Kp is less than Kc? (A) H2 + I2 leftharpoons 2HI (B) N2 + 3H2 leftharpoons 2NH3 (C) N2 + O2 leftharpoons 2NO (D) CO + H2O leftharpoons CO2 + H2

Tardigrade Admin · Accepted Answer

Kp = Kc (RT)Δ n; When Δ n = 2 - (2 + 1) = - 1, i.e., negative, Kp < Kc.

Q. In which of the following equilibria, the value of $K_{p}$ is less than $K_{c}$ ?

$H_{2} + I_{2} ⇌ 2 H I$

$N_{2} + 3 H_{2} ⇌ 2 N H_{3}$

$N_{2} + O_{2} ⇌ 2 NO$

$CO + H_{2} O ⇌ C O_{2} + H_{2}$

$K_{p} = K_{c} (RT)^{Δ n};$ When $Δ n = 2 - (2 + 1) = - 1,$ i.e., negative, $K_{p} < K_{c}$ .

Q. In which of the following equilibria, the value of Kp​ is less than Kc​?

H2​+I2​⇌2HI

N2​+3H2​⇌2NH3​

N2​+O2​⇌2NO

CO+H2​O⇌CO2​+H2​