Equilibrium NEET PYQ | Previous Year Questions with Solutions

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Topic Question Set

Q 1 :
For the reaction $2 A ⇌ B + C, K_{c} = 4 \times 10^{- 3}$ . At a given time, the composition of the reaction mixture is: $[A] = [B] = [C] = 2 \times 10^{- 3} M$ .

Then, which of the following is correct? [2024]

Reaction is at equilibrium.
Reaction has a tendency to go in forward direction.
Reaction has a tendency to go in backward direction.
Reaction has gone to completion in forward direction.

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(3)

For the reaction,

$2A ⇌ B + C; K_{C} = 4 \times 10^{- 3}$

$Q_{C} = \frac{[B] [C]}{[A]^{2}} = \frac{2 \times 10^{- 3} \times 2 \times 10^{- 3}}{{(2 \times 10^{- 3})}^{2}} = 1$

Since $Q_{C} > K_{C}$ , hence, the reaction will proceed in the direction of reactants (i.e., backward direction).

Q 2 :
If the value of equilibrium constant for a particular reaction is $1.6 \times 10^{12},$ then at equilibrium the system will contain [2015]

mostly products
similar amounts of reactants and products
all reactants
mostly reactants

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(1)

The value of K is high which means reaction proceeds almost to completion i.e., the system will contain mostly products.

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