Question

For the reaction \[\ce{2A <=> B + C}\], K_c = 4 × 10⁻³. At a given time, the composition of reaction mixture is:

[A] = [B] = [C] = 2 × 10⁻³ M

Then, which of the following is correct?

पर्याय

• Reaction has a tendency to go in a backward direction.

• Reaction has gone to completion in the forward direction.

• Reaction is at equilibrium.

• Reaction has a tendency to go in a forward direction.

Answer 1

Reaction has a tendency to go in a backward direction.

Explanation:

For the reaction, \[\ce{2A <=> B + C}\]

Quotient is given by:

Q_c = `([B][C])/([A]^2)`

= `([2 xx 10^-3][2 xx 10^-3])/([2 xx 10^-3]^2)`

= 1

Given, K_c = 4 × 10³

On comparing, K_c < Q_c

Hence, the reaction has a tendency to go in the backward direction.