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The temperature coefficient of most of t...

The temperature coefficient of most of the reactions lies between

A

`1` & `3`

B

`2` & `3`

C

`1` & `4`

D

`2` & `4`

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The correct Answer is:
B
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Arrhenius studied 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) . For most of the reactions it was found that the temperature coefficient of the reaction lies between 2 to 3. The 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 by studying how much the rate of reaction changes in the presence of catalyst. In most of the cases, it is observed that catalyst lowers the activationenergy barrier and increases the rate of reaction. If the rate oc reaction grwos 15.6 times on increasing the temperature by 30 K the temperature coefficient of the reaction will be nearly

Arrhenius studied 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) . For most of the reactions it was found that the temperature coefficient of the reaction lies between 2 to 3. The 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 by studying how much the rate of reaction changes in the presence of catalyst. In most of the cases, it is observed that catalyst lowers the activationenergy barrier and increases the rate of reaction. The pre-exponential factor in the Arrhenius equation of a second order reaction has the units

Arrhenius studied 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) . For most of the reactions it was found that the temperature coefficient of the reaction lies between 2 to 3. The 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 by studying how much the rate of reaction changes in the presence of catalyst. In most of the cases, it is observed that catalyst lowers the activationenergy barrier and increases the rate of reaction. Which of the following plot will be linear?

sqrt5 lies between

The temperature coefficient of a reaction is

The temperature coefficient of resistance of conductors is

The rate constant of a first order reaction at 27^@C is 10^(-3)mi n^(-1) . The temperature coefficient of this reaction is 2. What is the rate constant (in mi n^(-1) ) at 17^@C for this reaction?

AAKASH SERIES-CHEMICAL KINETICS-Objective Exercise - 1
  1. The temperature coefficient of a reaction is

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  2. If concentration of reactants is made x times the rate constant k beco...

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  3. The temperature coefficient of most of the reactions lies between

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  4. For a reaction(K((1+10)))/(K((1)))=x. When temperature is increased fr...

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  5. Increase of temperature will increase the reaction rate due to

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  6. The rate constants of a reaction at 300K and 280 K respectively are K(...

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  7. The rate constant K(1) of a reaction is found to be double that of ra...

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  8. The Arrhenius equation expressing the effect of temperature on the rat...

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  9. Activation energy depends on

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  10. A catalyst in a chemical reaction does not change

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  11. In general the rate of a given reaction can be increased by all the fa...

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  12. The effect of temperature on a reaction rate for whilch Ea is zero is ...

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  13. The rate expression gives the relation between rate of reaction and

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  14. In the graph drawn between log K and 1/T, intercept equalst o

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  15. In the Arrhenius equation equation,the Boltzmann factor e^(Ea//RT) rep...

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  16. Activationenergies for different reactions are give below a. Ato prod...

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  17. Which of the following parameters of a chemical readtion are increased...

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  18. The process 2A + B to C taking place in two steps: 1:2A to D"...

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  19. Which of the following influence the rate of reaction a. Nature of r...

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  20. Which of the following does not affect the rate of reaction?

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