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
रिकाम्या जागा भरा
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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.

Obtain the relationship between the rate constant and half-life of a first-order reaction.


Answer the following in brief.

Derive the integrated rate law for the first-order reaction.


Answer the following in brief.

What is a zeroth-order reaction?


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? 


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 ______.


Explain pseudo first order reaction with a suitable example.


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.


If 75% of a first order reaction was completed in 60 minutes, 50% of the same reaction under the same conditions would be completed in ____________.


Give two examples for zero order reaction.


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


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?


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


The rate constant of a reaction has same units as the rate of reaction. The reaction is of ____________.


The rate constant of a first order reaction is 3 × 10−6 per s. If the initial concentration is 0.10 mol dm−3, the initial rate of reaction is ____________.


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


The slope of a graph, log [A]t versus 't' for a first order reaction is −2.5 × 10−3 s−1. The rate constant for the reaction is ____________.


Which among the following is an example of zero order 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)


A first order reaction, A → B takes 100 minutes for it's 90% completion. What is the rate constant 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?


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


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?


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?


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


What are integrated rate laws?


For a first order reaction, the plot of log k against 1/T is a straight line. The slope of the line is equal to ______.


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


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