Practicing Success

Target Exam

CUET

Subject

Chemistry

Chapter

Physical: Chemical Kinetics

Question:

Identify the false statement from the following

Options:

If the concentration units are reduced by n times, then the value of the rate constant of first-order will increase by n times

The rate constant of a reaction depends upon the temperature

The rate equation is the expression that gives the relation between the rate of reaction and the concentration of reactants

The sum of the powers to which the concentration of substances appears in the rate expression is known as order of reaction

Correct Answer:

If the concentration units are reduced by n times, then the value of the rate constant of first-order will increase by n times

Explanation:

The false statement is (1). The rate constant of a reaction is independent of the concentration units. The rate constant is a measure of the inherent speed of a reaction, and it is not affected by the units used to measure the concentration of the reactants.

The other statements are all true. The rate equation is the expression that gives the relation between the rate of reaction and the concentration of the reactants. The order of reaction is the sum of the powers to which the concentration of substances appears in the rate expression. The rate constant of a reaction depends upon temperature, and it increases with increasing temperature.