n mole of PCl3 and n mole Cl2 are allowed to react at constant temperature T to have a total equilibrium pressure P, as :PCl3(g)+Cl2(g)⇌PCl5(g). If y mole of PCl3 are formed at equilibrium, find kp for the given reaction.
(n−y)2(2n−y)Py
(2n−y)y(n−y)2.P
y(n−y)2(2n−y)P
(n−y)2.P(2n−y)y
A
(2n−y)y(n−y)2.P
B
(n−y)2(2n−y)Py
C
y(n−y)2(2n−y)P
D
(n−y)2.P(2n−y)y
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Solution
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PCl3+Cl2⇌PCl5
Total Moles =n−y+n−y+y
=2n−y
PPCl5=yP2n−y
Kp=yP2n−y×(2n−y)2(n−y)2P2
=y(2n−y)(n−y)2P
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Q1
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Q2
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