Arrhenius equation shows the variation of ___________________ with temperature?

Related Mcqs:

1. Arrhenius equation represents graphically the variation between the ______________ and temperature?

   A. Rate of reaction
   B. Frequency factor
   C. Rate constant
   D. Activation energy

2. According to Arrhenius equation of temperature dependency of rate constant for an elementary reaction _________________?

   A. k ∝ √T
   B. k ∝ e-E/RT
   C. k ∝ T e-E/RT
   D. None of these

3. The unit of frequency factor in Arrhenius equation is_______________?

   A. Same as that of rate constant
   B. Same as that of activation energy
   C. Dimensionless
   D. None of these

4. With increase in temperature, the rate constant obeying Arrhenius equation____________________?

   A. Increases
   B. Decreases
   C. Decreases exponentially
   D. Can either increase or decrease; depends on the frequency factor

5. The temperature dependence of reaction rate constant (K) by Arrhenius law is given by_______________?

   A. K α e-E/RT
   B. K α eE/RT
   C. K α T . e-E/RT
   D. K α √T . e-E/RT

6. From Arrhenius law, a plot of loge K versus 1/T gives a straight line with a slope of (-E/R). The unit of E/R is___________________?

   A. k cal
   B. k cal/°K
   C. °K
   D. k cal. °K

7. The units of frequency factor in Arrhenius equation_________________?

   A. Are the same as those of the rate constant
   B. Depend on the order of the reaction
   C. Depend on temperature, pressure etc. of the reaction
   D. Are cycles per unit time

8. At a given value of E/R (ratio of activation energy and gas constant), the ratio of the rate constants at 500°K and 400°K is 2, if Arrhenius law is used. What will be this ratio, if transition state theory is used with the same value of „E/R‟ ?

   A. 1.6
   B. 2
   C. 2.24
   D. 2.5

9. In a/an ______________ reactor, there is exchange of heat with the surroundings with sizeable temperature variation?

   A. Adiabatic
   B. Isothermal
   C. Non-adiabatic
   D. None of these

10. The reaction in which the rate equation corresponds to a stoichiometric equation, is called a/an _______________ reaction?

    A. Elementary
    B. Non-elementary
    C. Parallel
    D. Autokinetic