Home
Class 12
CHEMISTRY
The decomposition of a hydrocarbon follo...

The decomposition of a hydrocarbon follows the equationk `= (4.5 xx 10 ^(11) s^(-1) )e^(-28000) K/T.` Calculate `E_a`.

Text Solution

Verified by Experts

The correct Answer is:
`232.8 KJ mol^(-1)`
`k= (4.5 xx 10^(11) s^(-1) ) xx e^(-28000) K//T `
comparing it with Arrhenius equation
`k= Ae^(-E_a //RT) , (-E_a )/(RT) = ( - 28000 K) /(T)`
or `E_a =28000 K xx R = 28000 K xx 8.314 JK^(-1)`
` = 232792 J mol^(-1) = 232.8 KJ mol^(-1)`
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    ICSE|Exercise INTEXT QUESRTIONS|81 Videos

  • CHEMICAL KINETICS

    ICSE|Exercise EXERCISE (PART- I (OBJECTIVE QUESRTIONS)A.FILL IN THE BLANKS) |54 Videos

  • CHEMICAL KINETICS

    ICSE|Exercise ISC EXAMINATION QUESTIONS (NUMERICAL PROBLEMS )|57 Videos

  • BIOMOLECULES

    ICSE|Exercise ISC EXAMINATION QUSTIONS (PART-I)(DESCRIPTIVE QUESTIONS)|21 Videos

  • CHEMISTRY IN EVERYDAY LIFE

    ICSE|Exercise EXERCISE (PART - II (DESCRIPTIVE QUESTIONS) (LONG ANSWER QUESTIONS))|19 Videos

Similar Questions

Explore conceptually related problems

The decomposition of hydrocarbon follows the equation k=(4.5xx10^(11)s^(-1))e^(-28000K//T) Calculate E_(a) .

The decomposition of hydrocarbon follows the equation k=(4.5xx10^(11)s^(-1))e^(-28000K//T) Calculate E_(a) .

The rate constant for the first order decomposition of H_(2)O_(2) is given by the following equation : log K = 14.2 - (1.0 xx 10^(4))/(T) K Calculate E for this reaction and rate constant k if its half life period be 200 minutes. (Given : R = 8.314 JK^(-1) mol^(-1) )

The rate constant of a reaction is 1.5 xx 10^(7)s^(-1) at 50^(@) C and 4.5 xx 10^(7)s^(-1) at 100^(@) C. Calculate the value of activation energy for the reaction (R=8.314 J K^(-1)mol^(-1))

The rate constant for a second order reaction is given by k=(5 times 10^11)e^(-29000k//T) . The value of E_a will be:

The rate constant of a reaction is 1.5 xx 10^(7)s^(-1) at 50^(@)C and 4.5 xx 10^(7) s^(-1) at 100^(@)C . Evaluate the Arrhenius parameters A and E_(a) .

The rate constant of a reaction is 1.5 xx 10^(7)s^(-1) at 50^(@)C and 4.5 xx 10^(7) s^(-1) at 100^(@)C . Evaluate the Arrhenius parameters A and E_(a) .

ICSE-CHEMICAL KINETICS-PROBLEM
  1. For a reaction, the energy of activation is zero. What is the value of...

    Text Solution

    |

  2. The rate constant for the decomposition of hydrocarbons is 2.418 × 10^...

    Text Solution

    |

  3. The decomposition of a hydrocarbon follows the equationk = (4.5 xx 10 ...

    Text Solution

    |

  4. The rate of a reaction triples when temperature changes from 50^@ C to...

    Text Solution

    |

  5. A certain reaction is 50% complete in 20 minutes at 300 K and the same...

    Text Solution

    |

  6. The rate of a reaction increases four times when the temperature chang...

    Text Solution

    |

  7. From the data given below, calculate the average rate of the reaction ...

    Text Solution

    |

  8. When 50 mL of 2M solution of N2 O5 was heated, 0.28 L of O2 at NTP was...

    Text Solution

    |

  9. Consider the following reaction which proceeds in a closed vessel. ...

    Text Solution

    |

  10. Express the rate of following reactions PCl5 to PCl3 +Cl2

    Text Solution

    |

  11. Express the rate of following reactions 2NO2 to 2NO +O2

    Text Solution

    |

  12. Express the rate of following reactions. H2 +I2 hArr 2HI

    Text Solution

    |

  13. Express the rate of following reactions. N2 +3H2 hArr 2NH3

    Text Solution

    |

  14. Identify the reaction order from each of the following rate constants ...

    Text Solution

    |

  15. Nitrogen dioxide (NO2) reacts with fluorine (F2) to yield nitryl fluor...

    Text Solution

    |

  16. Nitrogen dioxide (NO2) reacts with fluorine (F2) to yield nitryl fluor...

    Text Solution

    |

  17. Nitrogen dioxide (NO2) reacts with fluorine (F2) to yield nitryl fluor...

    Text Solution

    |

  18. For the reaction, X + Y to Z, the rate is given as k[X]^(1//3) [Y]^(...

    Text Solution

    |

  19. Carbonyl chloride gas decomposes to give carbon monoxide gas and chlor...

    Text Solution

    |

  20. The reaction N2O5 to 2NO2 + 1/2 O2 is of first order in N2 O5. Its ra...

    Text Solution

    |