मराठी
महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Time required for 100% completion of a zero order reaction is _______.

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प्रश्न

Time required for 100% completion of a zero order reaction is _______.

पर्याय

  • a/k

  • a/2k

  • a.k

  • 2k/a

MCQ
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उत्तर

Time required for 100% completion of a zero-order reaction is a/k.

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पाठ 6: Chemical Kinetics - Multiple choice questions

संबंधित प्रश्‍न

Answer the following in brief.

How will you represent the zeroth-order reaction graphically?


How will you represent first order reactions graphically.


Solve

A first-order reaction takes 40 minutes for 30% decomposition. Calculate its half-life.


Give one example of a pseudo first-order reaction.


The rate constant of the first order reaction is 1.386 min–1. Calculate the time required for 80% reactant to decompose?


Derive an expression for the relation between half-life and rate constant for first-order reaction.


This reaction follows first-order kinetics. The rate constant at particular temperature is 2.303 × 10−2 hour−1. The initial concentration of cyclopropane is 0.25 M. What will be the concentration of cyclopropane after 1806 minutes? (log 2 = 0.3010)


Give two examples for zero order reaction.


The time for half change in a first order decomposition of a substance A is 60 seconds. Calculate the rate constant. How much of A will be left after 180 seconds?


A first order reaction has a rate constant 0.00813 min-1. How long will it take for 60% completion?


For first order reaction the concentration of reactant decreases from 0.2 to 0.1 M in 100 minutes. What is the rate constant of the reaction?


The time of completion of 90% of a first order reaction is approximately ____________.


If time required to decrease concentration of reactant from 0.8 M to 0.2 M is 12 hours, the half life of this first order reaction is ____________.


The order of the reaction for which the unit of rate constant is s−1 is ____________.


Half-life period of a first order reaction, \[\ce{A -> product}\] is 3.0 hours. What is the value of rate constant?


Reaction given below follows first order kinetics:

\[\ce{2N2O2 -> 4NO2 + O2}\]

Calculate the rate constant of reaction if concentration of N2O2 is 0.05 M and rate of reaction is 1.5 × 10−6 mol L−1 s−1?


For a first order reaction, \[\ce{A -> B}\], if [A] = 1 M and rate is 4 × 10−2 M s−1. What is the rate constant of the reaction?


0.0210 M solution of N2O5 is allowed to decompose at 43°C. How long will it take to reduce to 0.0150 M?
(Given k = 6.0 × 10−4 sec−1)


What is the unit of rate constant for the zero order reaction?


Half-life of first-order reaction \[\ce{X -> Y + Z}\] is 3 minutes. What is the time required to reduce the concentration of 'X' by 90 % of it's initial concentration?


Rate constant for zero order reaction is 2 × 10-2 mol L-1 s-1. If the concentration of the reactant after 25 sec. is 0.5 M, what is the initial concentration of reactant?


If the rate constant for a first-order reaction is k, the time (t) required for the completion of 99% of the reaction is given by:


Which of the following is correct for a first-order reaction?


Consider the following reaction.

\[\ce{SO2(g) + 1/2 O2(g) <=>[K1] SO3(g)}\]

\[\ce{2SO3(g)<=>[K2] 2SO2(g) + O2(g)}\]

What is the relation between K1 and K2?


What is the rate constant of a first order reaction if 0.08 mole of reactant reduces to 0.02 mole in 23.03 minutes?


Which of the following correctly represents integrated rate law equation for a first order reaction in a gas phase?


Which of the following equations exhibits the integrated rate law equation for first order reaction?


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