    Question

# The reaction A(g)+B(g)⇋C(g)+D(g) is studied in a one litre vessel at 250 ∘C. The initial concentration of A was 3n and that of B was n. When equilibrium was attained, equilibrium concentration of C was found to be equal to the equilibrium concentration of B. What is the concentration of D at equilibrium?

A
n2
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B
(3n12)
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C
(nn3)
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D
n
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Solution

## The correct option is A n2Given equilibrium is, A+ B⇋ C+D Initial concentration: 3n n 0 0 at equilibrium 3n−x n−x x x At equilibrium the concentration of C is equal to concentration of B (n−x)=xn=2xx=n2 So, the concentration of C(n2) is equal to the concentration of D. Thus the concentration of D(x)=n2  Suggest Corrections  20      Similar questions
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