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The effect of temperature on a reaction ...

The effect of temperature on a reaction rate for whilch Ea is zero is give by

A

with increase of temperature rate increases

B

with increase of temperature rate decreases

C

rate is independent of temperature

D

reaction never occurs

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The correct Answer is:
C
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What is the effect of temperature on the rate constant ?

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

Give the effect of temperature on adsorption of gases by metals.

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?

Discuss the effect of temperature on the rate of a reaction. Derive necessary equations in this contaxt.

AAKASH SERIES-CHEMICAL KINETICS-OBJECTIVE EXERCISE - 1 (Rate and factors influencing rate)
  1. For a reaction(K((1+10)))/(K((1)))=x. When temperature is increased fr...

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

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

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

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

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  6. Activation energy depends on

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  7. A catalyst in a chemical reaction does not change

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

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

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  10. (A) The rate law of a reaction cannot be predicted from its balanced c...

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

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

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  13. Activation energies for different reactions are given below (a) A t...

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

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  15. For an exothermic chemical process occurring in two steps as i) A+Bt...

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

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

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

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  19. Rate constant of a reaction can be expressed by Arrhenius equation as ...

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  20. For N(2)O(5)("in CCl"(4))to2NO(2)+1/2O(2), K=6xx10^(-4)s^(-1) at 350...

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