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Q.

PCl₅ dissociates as follows in a closed reaction vessel PCl₅(g)⇌PCl₃(g)+Cl₂(g).If total pressure at equilibrium of the reaction mixture is P and degree of dissociation of PCl₅ is x, the partial pressure of PCl₃ will be

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a

[1/(1–x)] P

b

[x/(x–1)] P

c

[x/x+1] P

d

[2x/(1–x)] P

answer is C.

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Detailed Solution

The reaction is given below,

PCl₅(g)⇌PCl₃(g)+Cl₂(g).

(1–x) ⇌x+x

So, [x/1+x] P

Therefore, the correct answer is option (C) [x/x+1] P.

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PCl5 dissociates as follows in a closed reaction vessel PCl5(g)⇌PCl3(g)+Cl2(g).If total pressure at equilibrium of the reaction mixture is P and degree of dissociation of PCl5 is x, the partial pressure of PCl3 will be