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The activation energy of a reaction can ...

The activation energy of a reaction can be determined by

A

changing the concentration of reactants

B

evaluating rate constant at two standard temperatures

C

evaluating rate constant at two different temperatures

D

by doubling concentration of reactants

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The activation energy of a reaction can be determined by evaluating rate constant at two different temperatures.
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Arrhenius studies the effect of temperature on the rate of a reaction and postulted that rate constant varies with temperature exponentially as k=Ae^(E_(a)//RT) . Thuis method is generally used for finding the activation energy of a reaction. Keeping temperature constant, the effect of catalyst on the activation energy has also been studied. If the rate of reaction doubles for 10^(@)C rise of temperature form 290K to 300K, the activation energy of the reaction will be approximately: a) 40 Kcal mol^(-1) b) 12 Kcal mol^(-1) c) 60 Kcal mol^(-1) d) 70 Kcal mol^(-1)

Arrhenius studies the effect of temperature on the rate of a reaction and postulated that rate constant varies with temperature exponentially as k=Ae^(-E_(a)//RT) . This method is generally used for finding the activation energy of a reaction. Keeping temperature constant, the effect of catalyst on the activation energy has also been studied. If x is the fraction of molecules having energy greater than E_(a) it will be given by : a) x=-(E_(a))/(RT) b) In x=-(E_(a))/(RT) c) x=e^(E_(a)//RT) d) Any of these

Arrhenius studies the effect of temperature on the rate of a reaction and postulted that rate constant varies with temperature exponentially as k=Ae^(E_(a)//RT) . Thuis method is generally used for finding the activation energy of a reaction. Keeping temperature constant, the effect of catalyst on the activation energy has also been studied. The pre-exponetial factor in the Arrhenius equation of a first order reaction has the unit : a) mol L^(-1)s^(-1) b) L mol^(1)s^(-1) c) s^(-1) d) dimensionless

The activation energy for the reaction if k = A is

OMEGA PUBLICATION-CHEMICAL KINETICS -MULTIPLE CHOICE QUESTIONS (MCQ s)
  1. What is the effect of temperature on rate of a reaction.

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  2. The activation energy of reaction is equal to

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  3. The activation energy of a reaction can be determined by

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  4. The wavelength of first spectral line in the balmer series is 6561 ang...

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  5. The substance that increases the speed of a chemical reactions is call...

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  6. The reaction rate is found to depend upon two concentration terms. The...

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  7. For which of the following , the units of r constant and rate of the r...

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  8. A zero order reaction is one whose rate independent of

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  9. Calculate the wavelength of spectral line in lyman series correspondin...

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  10. For the hypothetical reaction A to Products , rate = - k [A] The n...

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  11. Which of the following graphs corresponds to first order reaction:

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  12. Arrhenius equation is

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  13. The chemical reactions in which the reactants require high amount of a...

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  14. Which of the following does not influence the reaction rate?

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  15. A reaction was found to be of second order with respect to concentrati...

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  16. For a reaction involving solid, decreasing which given below will incr...

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  17. Rate of first order reaction depends upon

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  18. Under a given set of experimental conditions, with increase of concent...

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  19. Units of specific reaction rate for 2nd order reaction is

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  20. The hydrolysis of ester in alkaline medium is a

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