Question

In which of the following cases, the reaction with a given $K_c$ goes farthest towards completion?

• A. $K_c=1$
• B. $K_c={10}^{-1}$
• C. $K_c={10}^{+5}$
• D. $K_c=10$

Answer 1

The correct option is C $K_c={10}^{+5}$

When,
$K_c<{10}^{-3},$ the reaction will rarely proceed.
$K_c>{10}^{+3}$, the reaction will proceed towards completion.
${10}^{-3}<K_c<{10}^{+3}$, both the reactant and products are significant.

Since, in option C, $K_c>{10}^{+3},$ this reaction will go farthest towards completion.