Home
Class 12
CHEMISTRY
The activation energy for the reaction, ...

The activation energy for the reaction, `2 HI (g) to +I-2(g),` is `209.5 KJ mol _-1` at 581K, Calculate the fraction of molecules of reactants having energy equal to or greater than activation energy.

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    PATHFINDER|Exercise QUESTION BANK|54 Videos

Similar Questions

Explore conceptually related problems

The activation energy for the reaction 2HI(g)rarrH_(2)+I_(2)(g) " is " 209.5"kJ.mol"^(-1) at 581K. Calculate the fraction of molecules of reactants having energy equal to or greater than activation. energy ?

The activation energy of most of the reactions occurring at 25^(@)C is generally 50"kJ.mol"^(-1) . Calculate the temperature coefficient of such reactions.

This question has Statement I and Statement II. Of four choices given after the Statements choose the one that best describes two statements Statement-I : Fraction of total molecules having energy equal to or greater than activation energy = k=Ae^((-E_a)/RT) Statement-II : Activation energy of a chemical reaction is always constant at a given temperature.

The activation energy of the exothermic reaction ArarrB " is "40"kJ."mol"^(-1) . The heat of reaction is 15"kj.mol"^(-1) . What is the activation energy for the backward reaction ?

The activation energy for the reaction 2HIrarrH_2+I_2 is 184 kJ/ mole. How many times greater is the rate constant for this reaction at 520^@C than at 500^@C (R=8.31 J/mole) ?

Enthalpy change for the reaction, 4H(g) to 2H_(2)(g) is -869.5kJ . The dissociation energy of H-H bond is-

Enthalpy change for the reaction, 4H(g) overset to 2H_2(g) is -869.5 kJ. The dissociation energy of H-H bond is

A reaction having equal energies of activation for forward and reverse reactions has-

A reaction having equal energies of activation for forward and reverse reactions has

PATHFINDER-CHEMICAL KINETICS-QUESTION BANK
  1. The rate constant for the first order decomposition of H2O2 is given b...

    Text Solution

    |

  2. The rate of the chemical reaction doubles for an increase of 10K in ab...

    Text Solution

    |

  3. The activation energy for the reaction, 2 HI (g) to +I-2(g), is 209.5 ...

    Text Solution

    |

  4. For the elementary reaction where k1/k2 = 1/2 Initially only 4 mol...

    Text Solution

    |

  5. For the sequently reaction A overset (KA) to B overset (KB) to C rat...

    Text Solution

    |

  6. If the atomic masses of lithium, helium and proton are 7.01823 amu, 4....

    Text Solution

    |

  7. Calculate the mass defect and binding energy per nucleon for "(27) Co^...

    Text Solution

    |

  8. Calculate the energy evolved (in joutes) per molecule of helium by the...

    Text Solution

    |

  9. Which of the following elements is non radioactive ?

    Text Solution

    |

  10. Predict the most likely mode of decay and product of decay for the nuc...

    Text Solution

    |

  11. Find out the total number of alpha and beta particles emitted in the d...

    Text Solution

    |

  12. Ten gram atoms of an alpha-active radioisotope are disintegrating in a...

    Text Solution

    |

  13. The half-life of Th^(232) is 1.4xx10^(10) years and that of its daught...

    Text Solution

    |

  14. Which of the following nuclide is likely to be radioactive?

    Text Solution

    |

  15. A piece of wood was found to have C^(14)/C^(12) ratio 0.7 times that i...

    Text Solution

    |

  16. In a sample of uranium ore the weight of Pb^(206) is 20.6% of the weig...

    Text Solution

    |

  17. The rate of the elementary reaction 2NO +O2 to 2NO2 when the volume of...

    Text Solution

    |

  18. For a general chemical change 2A =3B to products, the rates with respe...

    Text Solution

    |

  19. For the reaction N2 O5 to 2NO2 + 1/2 O2. Given -(d[N2O5])/dt = k3 [N2...

    Text Solution

    |

  20. Which of the following statement is false

    Text Solution

    |