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The rate of catalysed reaction is large than the uncatalysed reaction as _______. - Chemistry

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प्रश्न

The rate of catalysed reaction is large than the uncatalysed reaction as _______.

विकल्प

  • Ea is larger

  • Ea is lower

  • Ea is same

  • threshold energy is absent

MCQ
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उत्तर

The rate of catalysed reaction is large than the uncatalysed reaction as Ea is lower.

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अध्याय 6: Chemical Kinetics - Multiple choice questions

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एससीईआरटी महाराष्ट्र Chemistry [English] 12 Standard HSC
अध्याय 6 Chemical Kinetics
Multiple choice questions | Q 7

संबंधित प्रश्न

Answer the following in one or two sentences.

How do the half-lives of the first order and zero-order reactions change with the initial concentration of reactants?


In a first-order reaction, the concentration of the reactant decreases from 20 mmol dm3 to 8 mmol dm−3 in 38 minutes. What is the half-life of reaction? 


Write order of the following reaction:

\[\ce{2NH_{3(g)} -> N_{2(g)} + 3H_{2(g)}}\]


What is half life of first order reaction if time required to decrease concentration of reactants from 0.8 M to 0.2 M is 12 hours?


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


From the following data, show that the decomposition of hydrogen peroxide is a reaction of the first order:

t (min) 0 10 20
V (ml) 46.1 29.8 19.3

Where t is the time in minutes and V is the volume of standard KMnO4 solution required for titrating the same volume of the reaction mixture.


The integrated rate law is a direct relationship between ____________ and ____________.


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


What is the value of rate constant of first order reaction, if it takes 15 minutes for consumption of 20% of reactants?


The following reactions follow zero order kinetics, EXCEPT ____________.


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?


A first order reaction has rate constant 1 × 10−2 s−1. What time will, it take for 20 g or reactant to reduce to 5 g?


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


In a first order reaction, the concentration of the reactant, decreases from 0.8 mol dm−3 to 0.4 mol dm−3 in 15 minutes. The time taken for the concentration to change from 0.1 mol dm−3 to 0.025 mol dm−3 is ____________.


For the first order reaction, plot of log10 [A]t against time 't' is a straight line with a negative slope equal to ____________.


A first order reaction is 75% completed in 60 minutes, the time required for it's 50% completion is ____________.


The half-life of a first order reaction is 6.0 hour. How long will it take for the concentration of reactant to decrease from 0.4 M to 0.12 M?


Which among the following is an example of pseudo first order reaction?


Half-life of first order reaction is 20 minutes. What is the time taken to reduce the initial concentration of the reactant to `1/10`th?


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?


The expression to calculate time required for completion of zero order reaction is ______.


Which of the following reactions is not of the first order?


The rate constant for a first order reaction is 7.0 × 10-4 s-1. If initial concentration of reactant is 0.080 M, what is the half-life of reaction?


Half-life of a first order reaction is 30 minutes and initial concentration of reactant is 0.1 M.

What is half-life of the reaction if initial concentration of reactant is doubled? 


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?


What are integrated rate laws?


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