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

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 ______. - Chemistry

Advertisements
Advertisements

प्रश्न

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 ______.

पर्याय

  • 11.55

  • 115.5

  • 1155

  • 1.155

MCQ
रिकाम्या जागा भरा

उत्तर

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 1155.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 6: Chemical Kinetics - Multiple choice questions

संबंधित प्रश्‍न

What are pseudo-first-order reactions?


Solve

The half-life of a first-order reaction is 1.7 hours. How long will it take for 20% of the reactant to react?


Solve

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


Derive the integrated rate law for the zeroth order reaction. 


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?


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, the rate constant is 6.909 min−1 the time taken for 75% conversion in minutes is


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 zero order reaction is 20% complete in 20 minutes. Calculate the value of the rate constant. In what time will the reaction be 80% complete?


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 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?


A first order reaction completes its 10% in 20 minutes, then the time required to complete its 19% is ____________.


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 ____________.


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?


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?


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


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


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?


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


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


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


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


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


Calculate half-life of a first order reaction in minute if the rate constant is 1 × 10-3 s-1.


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?


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


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×