Home
Class 12
CHEMISTRY
How is rate constant of a reaction relat...

How is rate constant of a reaction related to its activation energy?

Text Solution

Verified by Experts

The rate constant k of a reaction at T K is related to its activation energy by Arrhenius equation, `k = A e ^( E _(a )RT) ,` where A is the frequency factor and R is the gas constant.
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    OMEGA PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS (MCQ s)|36 Videos

  • BIOMOLECULES

    OMEGA PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS |74 Videos

  • CHEMISTRY IN EVERYDAY LIFE

    OMEGA PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS (MCQs)|20 Videos

Similar Questions

Explore conceptually related problems

Rate constant of a reaction depends upon:

How is standard Gibbs energy of a reaction related to its equilibrium constant?

What is the effect of temperature on the rate constant of a reaction? How can this effect of temperature on rate constant be represented quantitatively?

The rate constant of a reaction increases four times when the temperature changes from 300 K to 320 K, Calculate the activation energy for the reaction. (R = 8.314 Jmol ^(-1) K ^(-1))

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)

The rate constant of a reaction has same units as the rate of reaction. The reaction is of …..

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 rate of reaction is equal to rate constant of the reaction. What is the order of reaction?

OMEGA PUBLICATION-CHEMICAL KINETICS -MULTIPLE CHOICE QUESTIONS (MCQ s)
  1. How is rate constant of a reaction related to its activation energy?

    Text Solution

    |

  2. Consider the chemical reaction, N (2) (g) + 3 H (2)(g) to 2 NH (3) (...

    Text Solution

    |

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

    Text Solution

    |

  4. Rate of first order reaction depends upon

    Text Solution

    |

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

    Text Solution

    |

  6. Rate at which a substance reacts depends upon its

    Text Solution

    |

  7. RCOO R ' + Na OH to RCOO Na + R ' OH. What type of reaction is this ?

    Text Solution

    |

  8. Units of rate constant for the first and zero order reactions in terms...

    Text Solution

    |

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

    Text Solution

    |

  10. The units of rate constant for first order equation.

    Text Solution

    |

  11. The hydrolysis of ester in alkaline medium is a

    Text Solution

    |

  12. Given the unit of second order rate constant

    Text Solution

    |

  13. The half life period of a zero order reaction is independent of initia...

    Text Solution

    |

  14. What is the effect of temperature on rate of a reaction.

    Text Solution

    |

  15. The activation energy of reaction is equal to

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |