(B) The reaction is $2\,A \rightleftharpoons B + C$ with $K_c = 4 \times 10^{-3}$.At a given time $t$, the reaction quotient $Q_c$ is calculated as:$Q

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Reaction has a tendency to go in backward direction.

(B) The reaction is $2\,A \rightleftharpoons B + C$ with $K_c = 4 \times 10^{-3}$.At a given time $t$, the reaction quotient $Q_c$ is calculated as:$Q_c = \frac{[B][C]}{[A]^2} = \frac{(2 \times 10^{-3})(2 \times 10^{-3})}{(2 \times 10^{-3})^2} = 1$.Comparing $Q_c$ with $K_c$:$Q_c = 1$ and $K_c = 4 \times 10^{-3}$.Since $Q_c > K_c$, the reaction will proceed in the backward direction to reach equilibrium.

Class 11 Chemistry 6-1.Equilibrium (Chemical Equilibrium)Law of equilibrium and Equilibrium constant

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For the reaction $2\,A \rightleftharpoons B + C$, $K_c = 4 \times 10^{-3}$. 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?

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

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6-1.Equilibrium (Chemical Equilibrium)

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Law of equilibrium and Equilibrium constant

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For the reaction $2\,A \rightleftharpoons B + C$, $K_c = 4 \times 10^{-3}$. 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?

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The decomposition of $N_2O_4$ to $NO_2$ is carried out at $280 \ K$ in chloroform. When equilibrium has been established,$0.2 \ mol$ of $N_2O_4$ and $2 \times 10^{-3} \ mol$ of $NO_2$ are present in $2 \ L$ solution. The equilibrium constant for the reaction $N_2O_4 \rightleftharpoons 2NO_2$ is:

The equilibrium constant for the reaction $PCl_{5(g)} \to PCl_{3(g)} + Cl_{2(g)}$ is $16$. If the volume of the container is reduced to one half its original volume,the value of $K_p$ for the reaction at the same temperature will be

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When $2 \ mol$ of $HI$ is heated in a closed vessel at $440 \ ^\circ C$,$22\%$ of $HI$ dissociates until equilibrium is reached. The equilibrium constant $K_c$ for the reaction is ..........

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