हिंदी

Rate constant of a reaction is 3.6 × 10–3 s–1. The order of reaction is ______. - Chemistry

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प्रश्न

Rate constant of a reaction is 3.6 × 10–3 s–1. The order of reaction is ______.

विकल्प

  • first

  • second

  • third

  • zero

MCQ
रिक्त स्थान भरें

उत्तर

Rate constant of a reaction is 3.6 × 10–3 s–1. The order of reaction is first.

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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 3

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?


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


For the reaction 2NOBr → 2NO2 + Br2, the rate law is rate = k[NOBr]2. If the rate of a reaction is 6.5 × 10–6 mol L–1 s–1, when the concentration of NOBr is 2 × 10–3 mol L–1. What would be the rate constant of the reaction?


Explain pseudo first order reaction with a suitable example.


Define half life of a reaction.


Write units of rate constants for:

  1. First-order reaction
  2. Zero-order reaction

For a first-order reaction \[\ce{A -> B}\] the rate constant is x min−1. If the initial concentration of A is 0.01 M, the concentration of A after one hour is given by the expression.


For a first order reaction \[\ce{A ->Product}\] with initial concentration x mol L−1, has a half life period of 2.5 hours. For the same reaction with initial concentration `("x"/2)` mol L−1 the half life is


The decomposition of phosphine (PH3) on tungsten at low pressure is a first-order reaction. It is because the


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)


Describe the graphical representation of first 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?


How long would it take to electroplate a spoon with 0.1 mol of silver (108 g/mol) at a constant current of 2.0 A using AgNO3?


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 ____________.


The activation energy of a reaction is zero. Its rate constant at 280 K is 1.6 × 10-6 s-1, the rate constant at 300 K is ______.


The integrated rate equation for first-order reaction, A → product, is ______.


Which of the following represents the expression for `(3/4)^"th"` life of 1st order reaction?


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 takes 40 minutes for 30% decomposition. What is the half-life of reaction?


A first order reaction takes 40 minutes for 30% completion. Calculate the half-life of reaction.


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?


The integrated rate equation is Rt = log C0 – log Ct, then the straight-line graph is obtained by plotting.


Which one of the following reactions is a true first-order reaction?


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


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?


The half-life of first order reaction is 1.7 hour. What is its rate constant?


What are integrated rate laws?


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