Question

In which of the following, the reaction proceeds towards completion?
(A) $ K = 1 $
(B) $ K = {10^{ - 2}} $
(C) $ K = 10 $
(D) $ K = {10^3} $

Answer 1

Hint: The reaction rate or rate of a reaction is defined as the speed at which a chemical reaction takes place. It is written in terms of the concentration of products and reactants. More is the reaction rate, faster is the occurrence or speed of a reaction. In the given options high reaction rate indicates the reaction towards completion.

Complete answer:
The chemical reaction is the conversion of the reactants into products by adding a reagent. The speed of a chemical reaction can be indicated by the term reaction rate. The reaction rate is also known as the rate of a reaction. The rate of a reaction can be indicated by $ K $ .
The reaction rate is nothing but talks about the speed of a reaction. The reaction rate is directly proportional to the increase in the concentration of products per unit time and the decrease in the concentration of reactants.
The more the reaction rate, the faster the occurrence of a reaction will be.
Out of the given options, the reaction rate given in option D has the most reaction rate as it is equal to $ 1000 $ .
Thus, when the reaction rate $ K = {10^3} $ the reaction proceeds towards completion.

Note:
By knowing the reaction rate, the factors that were decreasing the reaction rate can be known. By this, the production can be improved which will be very useful in large-scale reactions like the preparation of fertilizers, drugs, and pesticides.