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Write units of rate constants for: First-order reaction Zero order reaction - Chemistry

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प्रश्न

Write units of rate constants for:

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

उत्तर

Units of rate constants:

  1. First-order reaction: s–1, min–1 or hour–1
  2. Zero-order reaction: mol dm−3 s–1 
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पाठ 6: Chemical Kinetics - Short answer questions (Type- II)

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एससीईआरटी महाराष्ट्र Chemistry [English] 12 Standard HSC
पाठ 6 Chemical Kinetics
Short answer questions (Type- II) | Q 4.2

संबंधित प्रश्‍न

Answer the following in brief.

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

\[\ce{A_{(g)} -> B_{(g)} + C_{(g)}}\] in terms of pressure.


Derive the integrated rate law for the zeroth order reaction. 


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


Explain pseudo first order reaction with a suitable example.


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


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


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


In a first order reaction \[\ce{x -> y}\]; if k is the rate constant and the initial concentration of the reactant x is 0.1 M, then, the half life is


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


Write the rate law for the following reaction.

A reaction that is `3/2` order in x and zero order in y.


Write the rate law for the following reaction.

A reaction that is second order in NO and first order in Br2.


The following reactions follow zero order kinetics, EXCEPT ____________.


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The time of completion of 90% of a first order reaction is approximately ____________.


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 ______.


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


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 is 75% completed in 60 minutes, the time required for it's 50% completion is ____________.


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?


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


For the first order reaction A → B, the rate constant is 0.25 s-1, if the concentration of A is reduced to half, the value of rate constant will be ________.


Half-life of first order reaction is 20 minutes. What is the time taken to reduce the initial concentration of the reactant to `1/10`th?


What is the unit of rate constant for the zero order 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?


Obtain the expression for half-life and rate constant of the first-order reaction.


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


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? 


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