Question

Assertion :The $Q_c$ for the reaction:
$2{SO}_2\left(g\right)+O_2\left(g\right)\leftrightharpoons 2{SO}_3\left(g\right)$ is $Q_c=\frac{{\left[{SO}_3\right]}^2}{{\left[{SO}_2\right]}^2\left[O_2\right]}$ Reason: When $Q_c<K_c$, the reaction is not at equilibrium and it will fast in backward direction.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Assertion is incorrect but Reason is correct

Answer 1

The correct option is C Assertion is correct but Reason is incorrect

The $Q_c$ for the reaction:
$2{SO}_2\left(g\right)+O_2\left(g\right)\leftrightharpoons 2{SO}_3\left(g\right)$ is $Q_c=\frac{{\left[{SO}_3\right]}^2}{{\left[{SO}_2\right]}^2\left[O_2\right]}$
When $Q_c<K_c$, the reaction is not at equilibrium and it will proceed in forward direction. This is because the product concentration is less than equilibrium concentration and the reactant concentration is more than equilibrium concentration.
Assertion is correct but Reason is incorrect