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CBSE - Class 12 > Chemistry > Chemical Kinetics Worksheets

Free CBSE - Class 12 Chemistry - Chemical Kinetics worksheets

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1.
During nuclear explosion, one of the products is \(^{90}Sr\) with half-life of 28.1 years. If \(1 \mu g\) of \(^{90}Sr\) was absorbed in the bones of a newly born baby instead of calcium, how much of it will remain after 10 years and 60 years if it is not lost metabolically.
2.
For a first order reaction, show that time required for 99% completion is twice the time required for the completion of 90% of reaction.
3.
A first order reaction takes 40 min for 30% decomposition. Calculate \(t_{1/2}\).
4.

For the decomposition of azoisopropane to hexane and nitrogen at 543 K, the following data are obtained. 

Calculate the rate constant.

5.

The following data were obtained during the first order thermal decomposition of \(SO_{2}Cl_{2}\) at a constant volume. \(SO_{2}Cl_{2}(g) \rightarrow SO_{2}(g) + Cl_{2}(g)\) 

Calculate the rate of the reaction when total pressure is 0.65 atm.

6.

The rate constant for the decomposition of \(N_{2}O_{5}\) at various temperatures is given below:

Draw a graph between \(ln k\) and \(1/T\) and calculate the values of \(A\) and \(E_{a}\). Predict the rate constant at 30° and 50°C.

7.
The rate constant for the decomposition of hydrocarbons is \(2.418 \times 10^{-5}s^{-1}\) at 546 K. If the energy of activation is 179.9 kJ/mol, what will be the value of pre-exponential factor.
8.
Consider a certain reaction \(A \rightarrow Products\) with \(k = 2.0 \times 10^{-2}s^{-1}\). Calculate the concentration of \(A\) remaining after 100 s if the initial concentration of \(A\) is \(1.0 mol L^{-1}\).
9.
Sucrose decomposes in acid solution into glucose and fructose according to the first order rate law, with \(t_{1/2} = 3.00\) hours. What fraction of sample of sucrose remains after 8 hours ?
10.
The rate of a reaction quadruples when the temperature changes from 293 K to 313 K. Calculate the energy of activation of the reaction assuming that it does not change with temperature.
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Chapters in CBSE - Class 12 Chemistry

Solutions Worksheet Electrochemistry Worksheet The d- and f-Block Elements Worksheet Coordination Compounds Worksheet Haloalkanes and Haloarenes Worksheet Alcohols Worksheet Aldehydes Worksheet Amines Worksheet Biomolecules Worksheet

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