Equilibrium Question 635

Question: When 3 mole of A and 1 mole of B are mixed in 1 litre vessel the following reaction takes place $ {A_{(g)}}+{B_{(g)}} $ ⇌ $ 2{C_{(g)}} $ . 1.5 moles of C are formed. The equilibrium constant for the reaction is [MP PMT 2000]

Options:

A) 0.12

B) 0.25

C) 0.50

D) 4.0

Show Answer

Answer:

Correct Answer: D

Solution:

$ \underset{(3-0.75)}{\mathop{A}},+\underset{(1-0.75)}{\mathop{B}},\to \underset{1.5}{\mathop{2C}}, $

$ K=\frac{{{[C]}^{2}}}{[A][B]}=\frac{{{(1.5)}^{2}}}{2.25\times 0.25}=\frac{2.25}{2.25\times 0.25}=4.0 $ .



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