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The variation of rate constant with temp...

The variation of rate constant with temperature can be explained by Arrhenius equation. However , the can be explained by Activation energy is found to be temperature dependent/In such cases `(d "in" K)/(dT)=(E_(a))/(RT^(2))` should be used to predict variation of rate constant with tempreature. On the basic of this information , answer the question that follow :
If Arrhenius constant and `E_(a)` (activation energy0 are assumed to be constant then which of the following graph will be correct

A

B

C

D

Text Solution

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The correct Answer is:
C
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Knowledge Check

  • The variation of rate constant with temperature can be explained by Arrhenius equation. However , the can be explained by Activation energy is found to be temperature dependent/In such cases (d"in"K)/(dT)=(E_(a))/(RT^(2)) should be used to predict variation of rate constant with tempreature. On the basic of this information , answer the question that follow : Which if the following statement is not correct ?

    A
    Temperature coefficient of a reaction at high temperature will be less
    B
    Reaction with no activation energy will have no change in rate constant due to temperature
    C
    The factor by which catalyst increase rate constant will be same at all the temperature
    D
    Greater the activation energy, more sanitive will the rate constant be cecause of temperature

  • The variation of rate constant with temperature can be explained by Arrhenius equation. However , the can be explained by Activation energy is found to be temperature dependent/In such cases (d"in"K)/(dT)=(E_(a))/(RT^(2)) should be used to predict variation of rate constant with tempreature. On the basic of this information , answer the question that follow : If for a reaction in K=20-(20)/(T)+3 in T then E_(a) at 300 K will be

    A
    20 R
    B
    900 R
    C
    920 R
    D
    880 R

  • The temperature dependence of the rate of a chemical reaction can be explained by Arrhenius equaiton which is

    A
    `k = Ae^(Ea//RT)`
    B
    `k = Ae^(-Ea//RT)`
    C
    `k = Ae xx (E_(a))/(RT)`
    D
    `k = Ae xx (RT)/(E_(a))`

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    Plots showing the variation of the rate constant (k) with temperature (T) are given below. The plot that follows Arrhenius equations is

    Plots showing the variation of the rate constant (k) with temperature (T) are given below . The plot that follows Arrhenius equation is

    Plots showing the variation of the rate constant (k) with temperature (T) are given below. The plot that follows Arrhenius equation is

    Arrhenius equation k=Ae^(-E_(a)//RT) If the activation energy of the reaction is found to be equal to RT then,

    Which of the following graph is incorrect for variation of rate constant (K) with temperature for a reaction obeying Arrhenius equation ?

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