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The value of rate constant depends upon

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Important Questions on Chemical Kinetics

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2A+BC+D

In this reaction, if we double the concentration of A, reaction rate become two times. And in other experiment, we double the concentration of A and B, reaction rate again become two times. What is the order of this reaction?

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In a zero order reaction, 20% of the reaction complete in 10 s. How much time it will take to complete 50% of the reaction?
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If the half-life of the first order reaction is 50 s, what will be the value of its rate constant?
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In a first order reaction, on plotting a graph between t1/2 and concentration of reactant

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In data given below

 

A

mol/L

B

mol/L

rate

mol L-1s-1

a 0.02 1.2 3.0×10-3
b 0.04 2.4 6.0×10-3

The reaction may be

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For certain first order reaction, 75% of the reaction complete in 30 min. How much time it require to complete 99.9% of the reaction?
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For zero order reaction, t1/2 will be (A0 is the initial concentration, K is rate constant)