Home
Class 12
CHEMISTRY
An endothermic reaction, Ararr B have an...

An endothermic reaction, `Ararr B` have an activation energy `15 kcal//mol` and the heat of the reaction is `5 kcal//mol`. The activation energy of the reaction, `Brarr A` is:

A

20 kcal/mol

B

15 kcal/mol

C

10 kcal/mol

D

zero

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • BIOMOLECULES

    NIKITA PUBLICATION|Exercise MCQs|428 Videos

  • Chemical Thermodynamics & Energetics

    NIKITA PUBLICATION|Exercise QUESTION FROM COMPETITIVE EXAM|35 Videos

Similar Questions

Explore conceptually related problems

An exothermic reaction XrarrY has an activation energy of 90kJ mol^(-1) of X and the heat of reaction is 250 kJ . Find the activation energy of the reaction YrarrX .

An exothermic reaction, A rarr B , has an activation energy of "15 kcal mol"^(-1) and the energy of reaction is "5 kcal mol"^(-1) . The activation energy in "kcal mol"^(-1) for the reaction, BrarrA is

In an exothermic reaction X rarr Y , the activation energy is 100 kJ mol^(-1) of X . The enthalphy of the reaction is -140 kJ mol^(-1) . The activation energy of the reverse reaction Y rarr X is

An endothermic reaction A to B has an activation energy as K KJ "Mol "^(-1) of A . If energy change of the reaction is Y KJ , the activation of the reverse reaction is

In an exothermic reaction A rarr B , the activation energy of the forward reaction is 200 kJ mol^(-1) . The enthalpy of the reaction is 280 kJ mol^(-1) . The activation energy of the reverse reaction B rarr A is

NIKITA PUBLICATION-CHEMICAL KINETICS -MCQs
  1. The activation energy of a reaction is 9.0 kcal//mol. The increase i...

    Text Solution

    |

  2. How much faster would a reaction proceed at 25^(@)C than at 0^(@)C if ...

    Text Solution

    |

  3. At 373 K, a gaseous reaction to2B+C is found to be of first order. St...

    Text Solution

    |

  4. An endothermic reaction, Ararr B have an activation energy 15 kcal//mo...

    Text Solution

    |

  5. For the reaction 2NH3 to N2 +3H2, if -(d[NH3])/(dt)=k1[NH3], (d[N2...

    Text Solution

    |

  6. In a second order reaction, first order in each reactant A and B, whic...

    Text Solution

    |

  7. A first order reaction is 50% complete in 30 minutes at 27^@C and in 1...

    Text Solution

    |

  8. For A+B rarr C+D, DeltaH=-20 kJ mol^(-1), the activation energy of the...

    Text Solution

    |

  9. Given that k is the rate constant for some order of any reaction at te...

    Text Solution

    |

  10. The chemical reaction 2O(3) overset(k(1))rarr 3O(2) proceeds as follow...

    Text Solution

    |

  11. The rate of a certain reaction increases by 2.5 times when the tempera...

    Text Solution

    |

  12. A substance ''A'' decomposes in solution following the first order kin...

    Text Solution

    |

  13. In gaseous reaction, important for the understanding of the upper atmo...

    Text Solution

    |

  14. From the following data, the activation energy for the reaction (cal/m...

    Text Solution

    |

  15. A substance undergoes first order decomposition. The decomposition fol...

    Text Solution

    |

  16. The concentration of a reactant in a solution falls (i) from 0.2 to 0....

    Text Solution

    |

  17. The rate constant of a reaction increases by 5% when its temperature i...

    Text Solution

    |

  18. Milk turns sour at 40^(@)C three times faster as at 0^(@)C. The energy...

    Text Solution

    |

  19. If a reaction A +B toC is exothermic to the extent of 30 kJ/mol and th...

    Text Solution

    |

  20. The activation energy of a reaction is 9 kcal/mol. The increase in the...

    Text Solution

    |