Chemical Kinetics

NCERT

Question

The rate constant for the decomposition of at various temperatures is given below:
Draw a graph between ln and and calculate the values of A and . Predict the rate constant at and .

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Question

Mention the factors that affect the rate of a chemical reaction.

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Question

The half-life for radioactive decay of is years. An archaeological artifact containing wood had only of the found in a living tree. Estimate the age of the sample.

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Question

A first order reaction takes min for % decomposition. Calculate .

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Question

The following data were obtained during the first order thermal decomposition of at a constant volume.
ExperimentTotal pressure/ atm
Calculate the rate of the reaction when total pressure is atm.

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Question

Consider a certain reaction  Products with, . Calculate the concentration of A remaining after s, if the initial concentration of A is .

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Question

Sucrose decomposes in acid solution into glucose and fructose according to the first order rate law, with hours. What fraction of sample of sucrose remains after hours?

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Question

The rate of a reaction quadruples when the temperature changes from to . Calculate the energy of activation of the reaction assuming that it does not change with temperature.

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Question

The experimental data for decomposition of   in gas phase at are given below:

t/s

(i) Plot against t.
(ii) Find the half-life period for the reaction.
(iii) Draw a graph between and t.
(iv) What is the rate law?
(v) Calculate the rate constant.
(vi) Calculate the half-life period from k and compare it with (ii)

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Question

From the rate expression for the following reactions, determine their order of reaction and the dimensions of the rate constants.
(i)
(ii)
(iii)
(iv)

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