Kp / Kc for the reaction A(g)+2 B2(g) leftharpoons A B2(g) is

Question

Kp / Kc for the reaction A(g)+2 B2(g) leftharpoons A B2(g) is (A)  RT  (B) (RT)2 (C)  (1/RT)  (D)  (1/(RT)2)

Tardigrade Admin · Accepted Answer

A(g)+2B(g) xrightarrowAB2(g) Kp=KC(RT)Δ ng Δ ng= change in number of moles = moles of product - moles of reactant =1-3=-2 ∴ Kp=Kc(RT)-2 ⇒ (Kp/KC)=(1/(RT)2)

Q. $K_{p} / K_{c}$ for the reaction $A (g) + 2 B_{2} (g) ⇌ A B_{2} (g)$ is

$RT$

$(RT)^{2}$

$\frac{1}{RT}$

$\frac{1}{( RT ) ^{2}}$

$A (g) + 2 B (g) A B_{2} (g)$
$K_{p} = K_{C} (RT)^{Δ n}_{g}$
$Δ n_{g} =$ change in number of moles = moles of product - moles of reactant $= 1 - 3 = - 2$
$∴$ $K_{p} = K_{c} (RT)^{- 2}$
$\Rightarrow$ $\frac{K _{p}}{K _{C}} = \frac{1}{( RT ) ^{2}}$

Q. Kp​/Kc​ for the reaction A(g)+2B2​(g)⇌AB2​(g) is

RT

(RT)2

RT1​

(RT)21​