The rate of a first-order reaction is at 20 seconds after initiation of the reaction. The half-life period of the reaction is:

For the following reaction:

volume is increased to double its value by decreasing the pressure on it. If the reaction is first order with respect to X and second order with respect to the rate of reaction will :

Identify the order of reaction if its rate constant is .

For a complex reaction, the order of reaction is equal to

If 75% of a first order reaction gets completed in 32 minutes, time taken for 50% completion of this reaction is

The half-life for a zero order reaction having 0.02M initial concentration of reactant is 100s. The rate constant (in molL⁻¹ s⁻¹) for the reaction is

In collision theory of chemical reaction, represents

Which plot of is consistent with Arrhenius equation?

Activation energy of any chemical reaction can be calculated if one knows the value of

The rate of a reaction quadruples when temperature changes from Calculate the energy of activation.

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: reaction can have zero activation energy.
Reason R: The minimum extra amount of energy absorbed by reactant molecules so that their energy becomes equal to threshold value, is called activation energy.
In the light of the above statements, choose the correct answer from the options given below: