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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Answer the following in brief. What is a zeroth-order reaction?

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प्रश्न

Answer the following in brief.

What is a zeroth-order reaction?

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उत्तर

Reactions in which the rate is independent of the reactant concentration are zeroth-order reaction.

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पाठ 6: Chemical Kinetics - Exercises [पृष्ठ १३७]

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बालभारती Chemistry [English] Standard 12 Maharashtra State Board
पाठ 6 Chemical Kinetics
Exercises | Q 3. xiii. a. | पृष्ठ १३७

संबंधित प्रश्‍न

Solve

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


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


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 ______.


Give one example of a pseudo first-order reaction.


Write units of rate constants for:

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

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


The rate constant of a reaction is 5.8 × 10−2 s−1. The order of the reaction is ____________.


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?


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 ____________.


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?


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 ____________.


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 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 ____________.


What is the order of reaction if the unit of rate constant (k) is mol dm−3 s−1?


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


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?


For a first order reaction, \[\ce{A -> B}\], if [A] = 1 M and rate is 4 × 10−2 M s−1. What is the rate constant of the reaction?


A first order reaction is 50% completed in 16 minutes. The percentage of reactant that will react in 32 minutes is ____________.


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?


Define the half-life of a first-order reaction.


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 is the relation between half life and rate constant for a zero order?


A radioactive isotope decayed to 17/32 of its original mass after 60 minutes. Find the half-life of this radioisotope.


A first order reaction takes 10 minute for 30% completion. Find rate constant of the reaction.


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