In which one of the following equilibria, K_p K_c ?

Correct answer: A. (a) We know that, K_p=K_c . ( RT )^ n_g ∴If n_g 0 then K_p K_c Now, 2C (s )+O_2 (g ) ⇌2 CO (g ) n_g=+1 ⇒K_p=K_c ( RT )^1 Hence, K_p K_c

JEE · NEET Previous Year Question

$In which one of the following equilibria, K_{p} \neq = K_{c} ?$

Topic: JEE PYQ

Answer: A. Full step-by-step solution below.

A $2 C (s) + O_{2} (g) ⇌ 2 CO (g)$
B $2 HI (g) ⇌ H_{2} (g) + I_{2} (g)$
C $NO_{2} (g) + SO_{2} (g) ⇌ NO (g) + SO_{3} (g)$
D $2 NO (g) ⇌ N_{2} (g) + O_{2} (g)$

Correct answer: A

Solution

(a) We know that, K_{p} = K_{c} . (RT)^{Δ n_{g}} ∴ If Δ n_{g} \neq = 0 then K_{p} \neq = K_{c} Now, 2 C (s) + O_{2} (g) ⇌ 2 CO (g) Δ n_{g} = + 1 \Rightarrow K_{p} = K_{c} (RT)^{1} Hence, K_{p} \neq = K_{c}

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