In certain temprature compound AB2g dissociates according to the reaction 2AB2g- 2ABg-B2gWith degree of dissociation - which is small compared with unity- The expression of KP- in terms of - and initial pressure P is-

2AB_2(g)⇌ 2AB(g)+B_2(g) P 0 0 P(1 α) Pα Pα2 Kp=(Pα)^2.(Pα2)(P(1 α))^2,1 α lt; lt; 1 ∴ Kp=Pα ^32 ...

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Standard XII

Chemistry

Introduction

In certain te...

Question

In certain temprature compound $A B_{2} (g)$ dissociates according to the reaction
$2 A B_{2} g ⇌ 2 A B (g) + B_{2} (g)$
With degree of dissociation $α$ , which is small compared with unity. The expression of $K_{P}$ , in terms of $α$ and initial pressure P is:

P \frac{α^{3}}{2}

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\frac{P α^{2}}{3}

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P \frac{α^{3}}{3}

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\frac{P α^{2}}{2}

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Solution

The correct option is A $P \frac{α^{3}}{2}$
$2 A B_{2} (g) ⇌ 2 A B (g) + B_{2} (g)$
$P 00$
$P (1 - α) P α \frac{P α}{2}$
$K p = \frac{(P α)^{2} . (\frac{P α}{2})}{(P (1 - α))^{2}}, 1 - α << 1$
$∴ K p = \frac{P α^{3}}{2}$

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In certain temprature compound AB2(g) dissociates according to the reaction 2AB2g⇌2AB(g)+B2(g) With degree of dissociation α, which is small compared with unity. The expression of KP, in terms of α and initial pressure P is:

The correct option is A Pα322AB2(g)⇌2AB(g)+B2(g) P 0 0 P(1−α) Pα Pα2 Kp=(Pα)2.(Pα2)(P(1−α))2,1−α<<1 ∴Kp=Pα32

In certain temprature compound $A B_{2} (g)$ dissociates according to the reaction
$2 A B_{2} g ⇌ 2 A B (g) + B_{2} (g)$
With degree of dissociation $α$ , which is small compared with unity. The expression of $K_{P}$ , in terms of $α$ and initial pressure P is:

The correct option is A $P \frac{α^{3}}{2}$
$2 A B_{2} (g) ⇌ 2 A B (g) + B_{2} (g)$
$P 00$
$P (1 - α) P α \frac{P α}{2}$
$K p = \frac{(P α)^{2} . (\frac{P α}{2})}{(P (1 - α))^{2}}, 1 - α << 1$
$∴ K p = \frac{P α^{3}}{2}$