# Chemical Kinetics Mcqs

## Integrated Rate EquationsChemical Kinetics

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## CHEMICAL KINETICS Questions and Answers PDF

Chemical Kinetics All Topics Are Cover Click One By One To Read Everythings

1. Write the integrated rate equation for a Znd order reaction of the type, 2A product.

Ans. K t a(a-x)
where K = rate constant.
a initial amount
X amount reacted at time t

22.What is the effect of temperature on activation energy?

Ans. There is no effect of temperature on activation
energy.

1. Define rate constant of a reaction

Ans. It is a constant and equal to the rate of reaction
when concentration of the reactants is unity (l mole/litre).

1. Hydrolysis of ester in presence of mineral acid is an example of order reaction.

Ans. Pseudo first order

1. Alkaline hydrolysis of ester is an example of order reaction.

Ans. 2nd

1. If unit of rate constant is mole lit’ sec-l order of the reaction is.

Ans. zero

1. If for a reaction, the half life period is directly proportional initial concentration of reactant, what is the order of the reaction?

Ans. Zero order

1. Write the Arrhenius equation Ea

Ans. K = Ae RT
Where K = rate constnat
A Collision number
Ea = activation energy
R 8.314 JK mole
T absolute temperature

1. How does rate of reaction vary with activation energy ?

Ans. The reactions with smaller activation energy proceed faster and vice versa.

1. How is heat of reaction related to activation energy ?

Ans. AH =E – E,
Where AH heat of reaction.
E activation energy for forward reaction.
E activation energy for backward reaction.