Home
Class 12
CHEMISTRY
In some cases, it is found that a large ...

In some cases, it is found that a large number of colliding molecules have energy more than thereshold value, yet the reaction is slow. Why?

Text Solution

Verified by Experts

Due to improper orientation of the colliding molecules at the time of collision.
Promotional Banner

Topper's Solved these Questions

  • NCERT BASED EXERCISE

    CENGAGE CHEMISTRY|Exercise Surface Chemistry (In-Text Question)|8 Videos

  • NCERT BASED EXERCISE

    CENGAGE CHEMISTRY|Exercise Nuclear Chemistry (NCERT Exercise)|29 Videos

  • NCERT BASED EXERCISE

    CENGAGE CHEMISTRY|Exercise Chemical Kinetics (In -Text Questions)|9 Videos

  • GRIGNARD REAGENTS AND ORGANOMETALLIC REAGENTS

    CENGAGE CHEMISTRY|Exercise Exercises Archives (Linked Comprehension)|1 Videos

  • NUCLEAR CHEMISTRY

    CENGAGE CHEMISTRY|Exercise Archives Subjective|13 Videos

Similar Questions

Explore conceptually related problems

(a) The decomposition of A into products has a value of K as 4.5 xx 10^(3)s^(-1) " at "10^(@)C and energy of activation 60kJ "mol"^(-1) . At what temperature would K be 1.5 xx 10^(4) s^(-1) ? (b) (i) If half life period of a first order reaction is x and 3//4^(th) life period of the same reaction is y, how are x and y related to each other ? (ii) In some cases it is found that a large number of colliding molecules have energy more than threshold energy, yet the reaction is slow. Why?

For a certain reaction a large fraction of molecules has energy more than the threshold energy, still the rate of reaction is very slow. The possible reason for this could be that

If temperature changes from 27^@C to 42^@C then no. of molecules having energy greater than thershold energy become five times, then find activation energy of reaction in KJ. Given ln 5= 1.6094

Assertion (A) : Catalyst alters the individual energies of the reactants and products Reason (R) : As such more number of molecules are able to cross the barrier per unit time. Delta H or Delta U of the reaction remains unaltered.

CENGAGE CHEMISTRY-NCERT BASED EXERCISE-Short Answer Type Question
  1. Why cooking food in an open vessel takes more time at a hill station ?

    Text Solution

    |

  2. Why coal or petrol does not burn by itself in air but once initiated b...

    Text Solution

    |

  3. Why in general does not proceed with a uniform rate throughout?

    Text Solution

    |

  4. Why instantaneous rate is preferred over average rate?

    Text Solution

    |

  5. Why are reactions of higher order less in number?

    Text Solution

    |

  6. Is there any reaction whose rate does not decrease with time ?

    Text Solution

    |

  7. What is the order of reaction whose rate constant has the same units a...

    Text Solution

    |

  8. What type of plot is obtained for rate versus time for zero order reac...

    Text Solution

    |

  9. When is the rate of reaction equal to specific rate constants ?

    Text Solution

    |

  10. When does the average rate become equal to instantaneous rate ?

    Text Solution

    |

  11. On the basis of enthalpy of formation, graphite is more stable than di...

    Text Solution

    |

  12. In some cases, it is found that a large number of colliding molecules ...

    Text Solution

    |

  13. Can a reaction have negative or zero activation energy ?

    Text Solution

    |

  14. The reactions :2CO(g)=O(2)9g)rarr 2CO(2)(g) and 2NO(g)+O(2)(g) rarr 2N...

    Text Solution

    |

  15. What are the units of a pseudo unimolecular and pseudo bimolecular rea...

    Text Solution

    |

  16. What is the effect of adding catalyst on free energy change (DeltaG) o...

    Text Solution

    |

  17. Why equilibrium constant of a reaction does not change in the presence...

    Text Solution

    |

  18. What is the value of K at high temperature. Is it feasible or not ?

    Text Solution

    |