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The order of reaction may be a fractiona...

The order of reaction may be a fractional number.

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Which of the following statemen is /are correct about order of a reaction? I. The order of a reaction can be a fractional number. II. Order of a reaction is experimentally determined quantity. III. The order of a reaction is always equal to the sum of the stoichimetric coefficients of reactants in the balanced chemical equation for a reaction. IV. The order of a reaction is the sum of the powers of molar concentration of the reactants in the rate law expression. Choose the correct option.

Assertion (A) : The order of a reaction can be fractional but molecularity is never fractional. Reason (R ): The order of reaction does not depend upon the stoichiometric coefficients of a balanced equation.

Assertion (A) : The order a reaction can have a fractional value Reason (R) : The molecularity of a reaction can have a fractional value.

Assertion (A) : The order of a reaction can have fractional value Reason (R) : The order of a reaction cannot be written from balanced equation of a reaction.

Assertion (A) : The molecularity of a reaction may be a fraction Reason (R) : The molecularity of a reaction is the number of molecules whether of the same or different species that must contact simultaneously in a single step for the reaction to occur.

Assertion (A) : The order of a reaction may be defined as the sum of the powers to which the concentration terms are raised in order to determine the rate of reaction gives the total order of reactions. Reason (R) : The number of molecules whose concentrations determine the ratio of reaction at a given temperature is called order to the reaction.

Assertion: Order of a reaction can be fractional. Reason: Order of a reaction cannot be written from the balanced chemical equation.

CENGAGE CHEMISTRY-CHEMICAL KINETICS-Exercises True/False
  1. The order of reaction may be a fractional number.

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  2. The molecularity and order of reaction can be 0, 1, 2, etc.

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  3. The hydrolysis of ester in alkaline medium is a

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  4. All first order reactions are unimolecular.

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  5. All radioactive decompoistion reactions are…………..order reactions.

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  6. Negative catalyst stop chemical reactions.

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  7. Catalyiss does not alter state of chemical equilibrium.

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  8. A first order reaction has very high value of activation energy.

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  9. The molecularity of a complex reaction is always greater than the orde...

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  10. For a zero order reaction, The rate becomes double when the order of t...

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  11. For a zero order reaction, the half-life periof is independent of the ...

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  12. x g of a radioactive substance will be decomposed to 7//8x g in 40 s i...

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  13. For a first order reaction, the half-life periof is 0.263 k.

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  14. The sum of powers to which of the concentration terms are raised in th...

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  15. The difference between the energy maximum along a reaction path and th...

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  16. The graph between log k versus 1//T is a straight line.

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  17. The slope of the tangent at a point on the curve of concentration of a...

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  18. A poistive catalyst increases the activation energy of the reaction.

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  19. The slope of straight line in a plot of log.[A] versus time for a firs...

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  20. The rate of reaction increases with increase in activation energy.

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