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

Question

In which one of the following gaseous equilibria, Kp is less than Kc ? (A)  N2O4leftharpoons 2NO2  (B)  2SO2+O2leftharpoons 2SO3  (C)  2HIleftharpoons H2+I2  (D)  N2+O2leftharpoons 2NO

Tardigrade Admin · Accepted Answer

Kp=Kc(RT)Δ ng Δ ng=-1 (For the reaction, 2SO2+O2leftharpoons 2SO3 ). Thus, for this reaction, Kp is less than Kc .

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

$N_{2} O_{4} ⇌ 2 N O_{2}$

$2 S O_{2} + O_{2} ⇌ 2 S O_{3}$

$2 H I ⇌ H_{2} + I_{2}$

$N_{2} + O_{2} ⇌ 2 NO$

$K_{p} = K_{c} (RT)^{Δ n_{g}}$ $Δ n_{g} = - 1$ (For the reaction, $2 S O_{2} + O_{2} ⇌ 2 S O_{3}$ ). Thus, for this reaction, $K_{p}$ is less than $K_{c}$ .

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

N2​O4​⇌2NO2​

2SO2​+O2​⇌2SO3​

2HI⇌H2​+I2​

N2​+O2​⇌2NO