For the reaction, 2 A + B → products, when the concentration of A and B both were doubled, the rate of the reaction increased from 0.3 m o l L - 1 s - 1 to 2.4 m o l L - 1 s - 1 . When the concentration of A alone is doubled, the rate increased from 0.3 m o l L - 1 s - 1 to 0.6 m o l L - 1 s - 1 . Which one of the following statements is correct?

Order of the reaction with respect to B is 2

Total order of the reaction is 4

Order of the reaction with respect to A is 2

Order of the reaction with respect to B is 1

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On which of the following parameters does the rate constant of a reaction depend?
(i) time, (ii) concentration of reactants, (iii) temperature, and (iv) catalyst

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Important Questions on Chemical Kinetics

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Factors Influencing Rate of Reaction

Mention any two factors which influence the rate of reaction.

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Factors Influencing Rate of Reaction

Zinc piece and zinc powder are taken in two test tubes and equal amount of dil.

HCl

is added.
(a) In which test tube does the reaction proceed faster?
(b) Give reason.
(c) Give an instance in daily life, where such condition is made use.

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Factors Influencing Rate of Reaction

What is threshold energy?

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Factors Influencing Rate of Reaction

The rate of a first-order reaction is

0.04 m o l l^{- 1} s^{- 1}

10

second and

0.03 m o l l^{- 1} s^{- 1}

20

seconds after initiation of the reaction. The half-life period of the reaction is:

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Factors Influencing Rate of Reaction

The rate of a gaseous reaction is given by the expression

k [A] [B]^{2} .

If the volume of vessel is reduced to one half of the initial volume, the reaction rate as compared to original rate is

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Factors Influencing Rate of Reaction

The addition of a catalyst during a chemical reaction alters which of the following quantities?

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Factors Influencing Rate of Reaction

Name the factors that affect the rate of a reaction. Explain in detail.

HARD

Chemistry>Physical Chemistry>Chemical Kinetics>Factors Influencing Rate of Reaction

For an elementary chemical reaction, $A_{2} ⇄_{k_{- 1}}^{k_{1}} 2 A$ , the expression for $\frac{d [A]}{dt}$ is:

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Factors Influencing Rate of Reaction

A reaction is second order with respect to a reactant. How is the rate of reaction affected if the concentration of the reactant is doubled?

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Factors Influencing Rate of Reaction

How will the rate of reaction be affected when surface area of the reactant is reduced?

HARD

Chemistry>Physical Chemistry>Chemical Kinetics>Factors Influencing Rate of Reaction

Consider the given plots for a reaction obeying Arrhenius equation $(0 ° C < T < 300 ° C) :$ ( $K$ and $E_{a}$ are rate constant and activation energy, respectively )

(I)

Question Image

(II)

Question Image

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Factors Influencing Rate of Reaction

1 L

2 M {CH}_{3} COOH

is mixed with

1 L

3 M C_{2} H_{5} OH

to form an ester. The rate of the reaction with respect to the initial rate when each solution is diluted with an equal volume of water will be

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Factors Influencing Rate of Reaction

Decomposition of

X

exhibits a rate constant of

0 .05 μg / year

. How many years are required for the decomposition of

5 μg

X

into

2 .5 μg

HARD

Chemistry>Physical Chemistry>Chemical Kinetics>Factors Influencing Rate of Reaction

According to the Arrhenius equation,

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Factors Influencing Rate of Reaction

For the reaction,

2 A + B \to

products, when the concentration of

A

and

B

both were doubled, the rate of the reaction increased from

0.3 m o l L^{- 1} s^{- 1}

2.4 m o l L^{- 1} s^{- 1} .

When the concentration of

A

alone is doubled, the rate increased from

0.3 m o l L^{- 1} s^{- 1}

0.6 m o l L^{- 1} s^{- 1} .

Which one of the following statements is correct?

HARD

Chemistry>Physical Chemistry>Chemical Kinetics>Factors Influencing Rate of Reaction

For a first order reaction

A (g) \to 2 B (g) + C (g)

at constant volume and 300 K, the total pressure at the beginning

(t = 0)

and at time are

p_{0} and p_{t}

, respectively. Initially, only A is present with concentration

{[A]}_{0}

, and

t_{\frac{1}{3}}

is the time required for the partial pressure of A to reach

1 / 3^{rd}

of its initial value. The correct option(s) is (are)
(Assume that all these gases behave as ideal gases)

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Factors Influencing Rate of Reaction

For a reaction, consider the plot of $l n k$ versus $1 / T$ given in the figure. If the rate constant of this reaction at $400 K$ is $10^{- 5} s^{- 1}$ , then the rate constant at $500 K$ is:

Question Image

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Factors Influencing Rate of Reaction

In mechanism of any reaction, the step going in the slowest manner is called _____

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Factors Influencing Rate of Reaction

Which one of the factors does not affect rate of the reaction?

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Factors Influencing Rate of Reaction

The decomposition of phosphine

(P H_{3})

on tungsten at low pressure is a first-order reaction. It is because the

On which of the following parameters does the rate constant of a reaction depend? (i) time, (ii) concentration of reactants, (iii) temperature, and (iv) catalyst

Important Questions on Chemical Kinetics

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On which of the following parameters does the rate constant of a reaction depend?
(i) time, (ii) concentration of reactants, (iii) temperature, and (iv) catalyst