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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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संबंधित प्रश्न
Answer the following in brief.
Obtain the relationship between the rate constant and half-life of a first-order reaction.
What are pseudo-first-order reactions?
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 ______.
Give one example of a pseudo first-order reaction.
Derive an integrated rate law expression for first order reaction: A → B + C
Derive an expression for the relation between half-life and rate constant for first-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.
For a first order reaction \[\ce{A ->Product}\] with initial concentration x mol L−1, has a half life period of 2.5 hours. For the same reaction with initial concentration `("x"/2)` mol L−1 the half life is
Assertion: rate of reaction doubles when the concentration of the reactant is doubles if it is a first-order reaction.
Reason: rate constant also doubles.
Give two examples for zero 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?
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?
The integrated rate law is a direct relationship between ____________ and ____________.
The following reactions follow zero order kinetics, EXCEPT ____________.
The time of completion of 90% of a first order reaction is approximately ____________.
The rate constant of a reaction has same units as the rate of reaction. The reaction is of ____________.
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 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.
The time required to decompose SO2Cl2 to half of it's initial amount is 60 minutes. Calculate rate constant for this first order reaction.
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?
The integrated rate law is a direct relationship between time and ______
Define the half-life of a first-order reaction.
Which one of the following reactions is a true 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:
Calculate half-life of a first order reaction in minute if the rate constant is 1 × 10-3 s-1.
