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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

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 ______.

पर्याय

  • first

  • second

  • third

  • zero

MCQ
रिकाम्या जागा भरा
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उत्तर

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

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पाठ 6: Chemical Kinetics - Multiple choice questions

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संबंधित प्रश्‍न

Answer the following in brief.

What are the units of the rate constant?


Derive the integrated rate law for the zeroth order reaction. 


For first order reaction, the rate constant for the decomposition of N2O5 is 6 × 10–4 s –1. The half-life period for decomposition in seconds is ______.


Write order of the following reaction:

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


Explain with the help of a potential energy diagram that the catalyst increases the rate of the reaction.


For a first-order reaction, the rate constant is 6.909 min−1 the time taken for 75% conversion in minutes is


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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?


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?


A first order reaction is 25% completed in 40 minutes. What is the rate constant k tor the reaction?


A reaction that is of the first order with respect to reactant A has a rate constant 6 min−1. If we start with [A]0 = 0.5 mol dm−3, when would [A] reach the value 0.05 mol dm−3?


Which among the following reaction is an example of a zero order reaction?


If [A] is the concentration of A at any time t and [A]0 is the concentration at t = 0, then for the 1st order reaction, the rate equation can be written as ____________.


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 ____________.


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


The rate and the rate constants of the reaction, \[\ce{A + 2B -> C + D}\] are 8 × 10−3 mol dm−3 s−1 and 2 × 10−3 s−1 respectively. The concentrations of A and B are 4 mol dm−3 each. The overall order of the reaction is ____________.


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)


A certain zero order reaction has rate constant 0.025 M s-1. What will be the concentration of reactant 'A' after 15 seconds, if initial concentration is 0.50 M?


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?


For zero order reaction, when [A]t is plotted against time (t), the slope of the straight line obtained is equal to ______.


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


The integrated rate law is a direct relationship between time and ______


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 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?


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


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