Question

1.
Which of the following equilibrium remains unaffected by a change in pressure (or volume)?
(1) 2NOCI=2NO+Cl2(0)
(2) H20 + CO2.0 =H,06 +CO
(3) 3PbS. +3026 =2P60g) +2SO26)
(4) PC150) = PC13a + Cl20)
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Answer 1

Answer:

Equilibrium remain unaffected by change in pressure when Δn=0 for the reaction.

(a) 2NOCl(g)⇌2NO(s)+Cl

2

(g)Δn=1−2=−1

(b) H

2

(g)+CO

2

(g)⇌H

2

O(g)+CO(g)Δn=1+1−1−1=0

(c) 3PbS(s)+3O

2

(g)⇌2PbO(s)+2SO

2

(g)Δn=2−3=−1

(d) PCl

5

(g)⇌PCl

3

(g)+Cl

2

(g)Δn=1+1−1=1

Answer 2

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