Read the passage given below and answer the following questions:The half-life of a reaction is the time required for the concentration of reactant to decrease by half, i.e.,[A]t = [A]/2For first order reaction,t1/2 = 0.693/kThis means t1/2 is independent of initial concentration. Figure shows that typical variation of concentration of reactant exhibiting first order kinetics. It may be noted that though the major portion of the first order kinetics may be over in a finite time, but the reaction will never cease as the concentration of reactant will be zero only at infinite time.The following questions are multiple choice questions. Choose the most appropriate answer:Q. The rate of a first order reaction is 0.04 mol L-1 s-1 at 10 minutes and 0.03 mol L-1 s-1 at 20 minutes after initiation. The half life of the reaction isa)4.408 minb)44.086 minc)24.086 mind)2.408 minCorrect answer is option 'C'. Can you explain this answer?

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Read the passage given below and answer the following questions:

The half-life of a reaction is the time required for the concentration of reactant to decrease by half, i.e.,

[A]_t = [A]/2

For first order reaction,

t_1/2 = 0.693/k

This means t_1/2 is independent of initial concentration. Figure shows that typical variation of concentration of reactant exhibiting first order kinetics. It may be noted that though the major portion of the first order kinetics may be over in a finite time, but the reaction will never cease as the concentration of reactant will be zero only at infinite time.

The following questions are multiple choice questions. Choose the most appropriate answer:

Q. The rate of a first order reaction is 0.04 mol L^-1 s^-1 at 10 minutes and 0.03 mol L^-1 s^-1 at 20 minutes after initiation. The half life of the reaction is

a)
4.408 min
b)
44.086 min
c)
24.086 min
d)
2.408 min

Correct answer is option 'C'. Can you explain this answer?

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Read the passage given below and answer the following questions:The h...

The rate law expression for the first order reaction is = K × [A].

Substitute values in the above expression.

0.04=K[A]₁₀ ......(1)

0.03=K[A]₂₀ ......(2)

Divide equation (1) by equation (2).

At 10 min, the expression for the rate constant will be t = 2.303/K log

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Read the passage given below and answer the following questions:The h...

The rate law expression for the first order reaction is = K × [A].

Substitute values in the above expression.

0.04=K[A]₁₀ ......(1)

0.03=K[A]₂₀ ......(2)

Divide equation (1) by equation (2).

At 10 min, the expression for the rate constant will be t = 2.303/K log

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Read the passage given below and answer the following questions:The half-life of a reaction is the time required for the concentration of reactant to decrease by half, i.e.,[A]t = [A]/2For first order reaction,t1/2 = 0.693/kThis means t1/2 is independent of initial concentration. Figure shows that typical variation of concentration of reactant exhibiting first order kinetics. It may be noted that though the major portion of the first order kinetics may be over in a finite time, but the reaction will never cease as the concentration of reactant will be zero only at infinite time.The following questions are multiple choice questions. Choose the most appropriate answer:Q. A first order reaction has a rate constant k = 3.01 x 10-3 /s. How long it will take to decompose half of the reactant?

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Read the passage given below and answer the following questions:The rate of the reaction is proportional to the concentration of the reactant. Hydrogenation of ethene results in the formation of ethane. The rate constant, k for the reaction was found to be 2.5 × 10–15s–1. The concentration of the reactant reduces to one-third of the initial concentration in 5 minutes. The following questions are multiple choice questions. Choose the most appropriate answer:Q. The half-life for the reaction is

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Read the passage given below and answer the following questions:The half-life of a reaction is the time required for the concentration of reactant to decrease by half, i.e.,[A]t = [A]/2For first order reaction,t1/2 = 0.693/kThis means t1/2 is independent of initial concentration. Figure shows that typical variation of concentration of reactant exhibiting first order kinetics. It may be noted that though the major portion of the first order kinetics may be over in a finite time, but the reaction will never cease as the concentration of reactant will be zero only at infinite time.The following questions are multiple choice questions. Choose the most appropriate answer:Q. The rate of a first order reaction is 0.04 mol L-1 s-1 at 10 minutes and 0.03 mol L-1 s-1 at 20 minutes after initiation. The half life of the reaction isa)4.408 minb)44.086 minc)24.086 mind)2.408 minCorrect answer is option 'C'. Can you explain this answer?

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Read the passage given below and answer the following questions:The half-life of a reaction is the time required for the concentration of reactant to decrease by half, i.e.,[A]t = [A]/2For first order reaction,t1/2 = 0.693/kThis means t1/2 is independent of initial concentration. Figure shows that typical variation of concentration of reactant exhibiting first order kinetics. It may be noted that though the major portion of the first order kinetics may be over in a finite time, but the reaction will never cease as the concentration of reactant will be zero only at infinite time.The following questions are multiple choice questions. Choose the most appropriate answer:Q. The rate of a first order reaction is 0.04 mol L-1 s-1 at 10 minutes and 0.03 mol L-1 s-1 at 20 minutes after initiation. The half life of the reaction isa)4.408 minb)44.086 minc)24.086 mind)2.408 minCorrect answer is option 'C'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Read the passage given below and answer the following questions:The half-life of a reaction is the time required for the concentration of reactant to decrease by half, i.e.,[A]t = [A]/2For first order reaction,t1/2 = 0.693/kThis means t1/2 is independent of initial concentration. Figure shows that typical variation of concentration of reactant exhibiting first order kinetics. It may be noted that though the major portion of the first order kinetics may be over in a finite time, but the reaction will never cease as the concentration of reactant will be zero only at infinite time.The following questions are multiple choice questions. Choose the most appropriate answer:Q. The rate of a first order reaction is 0.04 mol L-1 s-1 at 10 minutes and 0.03 mol L-1 s-1 at 20 minutes after initiation. The half life of the reaction isa)4.408 minb)44.086 minc)24.086 mind)2.408 minCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Read the passage given below and answer the following questions:The half-life of a reaction is the time required for the concentration of reactant to decrease by half, i.e.,[A]t = [A]/2For first order reaction,t1/2 = 0.693/kThis means t1/2 is independent of initial concentration. Figure shows that typical variation of concentration of reactant exhibiting first order kinetics. It may be noted that though the major portion of the first order kinetics may be over in a finite time, but the reaction will never cease as the concentration of reactant will be zero only at infinite time.The following questions are multiple choice questions. Choose the most appropriate answer:Q. The rate of a first order reaction is 0.04 mol L-1 s-1 at 10 minutes and 0.03 mol L-1 s-1 at 20 minutes after initiation. The half life of the reaction isa)4.408 minb)44.086 minc)24.086 mind)2.408 minCorrect answer is option 'C'. Can you explain this answer?.

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