Under what condition the order of the reaction, 2 H I → H 2 g + I 2 g , is zero

At high partial pressure of H I

At high partial pressure of H 2

At high partial pressure of I 2

EASY

Earn 100

If half-life period of a reaction is inversely proportional to initial concentration of the reactant, what is the order of reaction?

Important Questions on Chemical Kinetics

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Integrated Rate Law for Zero and First Order Reactions

It takes

1 h

for a first order reaction to go to

50 %

completion. The total time required for the same reaction to reach

87.5 %

completion will be

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Integrated Rate Law for Zero and First Order Reactions

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

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Integrated Rate Law for Zero and First Order Reactions

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

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Integrated Rate Law for Zero and First Order Reactions

Under what condition the order of the reaction,

2 H I \to H_{2} (g) + I_{2} (g),

is zero

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Integrated Rate Law for Zero and First Order Reactions

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:

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Integrated Rate Law for Zero and First Order Reactions

The rate constant for a first order reaction is

7 .0 \times 10^{- 4} s^{- 1} .

If initial concentration of the reactant is

0.080 M

, what is the half-life of the reaction?

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Integrated Rate Law for Zero and First Order Reactions

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

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Integrated Rate Law for Zero and First Order Reactions

The rate constant for the first order reaction is

60 s^{- 1} .

How much time will it take to reduce the concentration of the reactant to

\frac{1}{16} t h

value?

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Integrated Rate Law for Zero and First Order Reactions

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

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Integrated Rate Law for Zero and First Order Reactions

The rate constant of the reaction

A ⟶ B

0.6 \times 10^{- 3}

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

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Integrated Rate Law for Zero and First Order Reactions

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

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Integrated Rate Law for Zero and First Order Reactions

The half-life of the first-order reaction,

{CH}_{3} CHO (g) \to {CH}_{4} (g) + CO (g)

, if the initial pressure of

{CH}_{3} CHO (g)

80 mm

Hg

and the total pressure at the end of

20

minutes is

120 mm

Hg

, is:

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Integrated Rate Law for Zero and First Order Reactions

A first-order reaction has a specific reaction rate

10^{- 2} \sec^{- 1} .

How much time will it take for

20 g

the reactant to reduce to

5 g

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Integrated Rate Law for Zero and First Order Reactions

The half-life period of a first-order chemical reaction is

6.93

minutes. The time required for the completion of

99 %

of the chemical reaction will be

(\log 2 = 0 .301)

HARD

Chemistry>Physical Chemistry>Chemical Kinetics>Integrated Rate Law for Zero and First Order Reactions

The half-life period of a first-order reaction is

15 minutes

. The amount of substance left after one hour will be

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Integrated Rate Law for Zero and First Order Reactions

During the nuclear explosion, one of the products is

^{90} S r

with half life of

6.93

years. If

1 μ g

^{90} S r

was absorbed in the bones of a newly born baby in place of

C a,

how much time, in years, is required to reduce it by

90 %

if it is not lost metabolically ____________.

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Integrated Rate Law for Zero and First Order Reactions

Decomposition of

H_{2} O_{2}

follows a first order reaction. In fifty minutes the concentration of

H_{2} O_{2}

decreases from

0.5

0.125 M

in one such decomposition. When the concentration of

H_{2} O_{2}

reaches

0.05 M

, the rate of formation of

O_{2}

will be:

HARD

Chemistry>Physical Chemistry>Chemical Kinetics>Integrated Rate Law for Zero and First Order Reactions

The reaction

2 N_{2} O_{5} (g) \to 4 N O_{2} (g) + O_{2} (g)

follows first order kinetics. The pressure of a vessel containing only

N_{2} O_{5}

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) :

HARD

Chemistry>Physical Chemistry>Chemical Kinetics>Integrated Rate Law for Zero and First Order Reactions

N_{2} O_{5}

decomposes to

{NO}_{2}

and

O_{2}

follows the first order kinetics. After

50

minutes, the pressure inside the vessel increases from

50 mm Hg

87.5 mm Hg

. The pressure of the gaseous mixture after

100

minutes at constant temperature will be:

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Integrated Rate Law for Zero and First Order Reactions

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

If half-life period of a reaction is inversely proportional to initial concentration of the reactant, what is the order of reaction?

Important Questions on Chemical Kinetics

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