EASY
Earn 100

The unit of the rate constant of a third-order chemical reaction is
(a)
(b)
(c)
(d)

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Important Questions on Chemical Kinetics
EASY
The rate constant for a first order reaction is If initial concentration of the reactant is , what is the half-life of the reaction?

MEDIUM
What is the correct difference between first and second order reactions?

EASY
It takes for a first order reaction to go to completion. The total time required for the same reaction to reach completion will be

EASY
A first-order reaction has a specific reaction rate How much time will it take for the reactant to reduce to ?

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

MEDIUM
For a zero - order reaction with rate constant k, the slope of the plot reactant concentration against time is

EASY
If 50 % of a reaction occurs in 100 second and 75 % of the reaction occurs in 200 second, the order of this reaction is:

MEDIUM
Decomposition of follows a first order reaction. In fifty minutes the concentration of decreases from to in one such decomposition. When the concentration of reaches , the rate of formation of will be:

EASY
The rate constant of the reaction is mole per liter per second. If the initial concentration of A is 5 M, then the concentration of B after 20 minutes is:

HARD
The reaction follows first order kinetics. The pressure of a vessel containing only was found to increase from 50 mm Hg to 87.5 mm Hg in 30 min. The pressure exerted by the gases after 60 min. Will be (Assume temperature remains constant) :

MEDIUM
The half-life period of a first-order chemical reaction is minutes. The time required for the completion of of the chemical reaction will be

EASY
The half-life of the first-order reaction, , if the initial pressure of is and the total pressure at the end of minutes is , is:

HARD
The half-life period of a first-order reaction is . The amount of substance left after one hour will be

EASY
Under what condition the order of the reaction,
is zero

MEDIUM
The rate constant for the first order reaction is How much time will it take to reduce the concentration of the reactant to value?

MEDIUM
The given plots represent the variation of the concentration of a reactant with time for two different reactions . The respective orders of the reaction are
(i)
(ii)

MEDIUM
If the rate constant for a first order reaction is , the time required for the completion of of the reaction is given by

EASY
When initial concentration of a reactant is doubled in a reaction, its half-life period is not affected. The order of the reaction is:

HARD
decomposes to and follows the first order kinetics. After minutes, the pressure inside the vessel increases from to . The pressure of the gaseous mixture after minutes at constant temperature will be:

EASY
When initial concentration of the reactant is doubled, what happens to the half-life period of a zero order reaction?

