Equilibrium Question 721

Question: If in the reaction $ N_2O_4=2N{O_{2,}},a $ is that part of $ N_2O_4 $ which dissociates, then the number of moles at equilibrium will be

Options:

A) 3

B) 1

C) $ {{(1-a)}^{2}} $

D) $ {{(1+a)}^{2}} $

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Answer:

Correct Answer: D

Solution:

$ \underset{\underset{(1-\alpha )}{\mathop{1}},}{\mathop{N_2O_4}},\rightarrow \underset{\underset{2\alpha }{\mathop{0}},}{\mathop{2NO_2}}, $ Total mole at equilibrium $ =(1-\alpha )+2a=1+\alpha $



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