Home
Class 12
CHEMISTRY
For a reaction, activation energy (Ea ) ...

For a reaction, activation energy `(E_a )` =0 and rate constant, `k = 1.5 x 10^4 s^(-1)` at 300 K. What is the value of rate constant at 320 K'?

A

`3.2xx10^(-12)s^(-1)`

B

`3.2xx10^(6)s^(-1)`

C

`6.4xx10^(12)s^(-1)`

D

`6.4xx10^(6)s^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B

When `E_(a)=0` rate constant is independent of temperature
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Photochemical Reaction)|4 Videos
  • CHEMICAL KINETICS

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Graphical Questions)|7 Videos
  • CHEMICAL KINETICS

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Rate Law and Rate Constant)|106 Videos
  • CARBOXYLIC ACIDS

    ERRORLESS|Exercise Assertion & Reason|5 Videos
  • CHEMISTRY IN EVERYDAY LIFE

    ERRORLESS|Exercise Assertion & Reason|4 Videos

Similar Questions

Explore conceptually related problems

For a reaction the activation energy E_a=0 and the rate constant= 3.2 times 10^6 sec^-1 at 300K. What is the value of rate constant at 310K?

The activation energy of a reaction is zero. Its rate constant at 280 K is 16 xx 10^(-6) s^(-1) the rate constant at 300k is

A colliison between reactant molecules must occur with a certain minimum energy before it is effective in yielding Product molecules. This minimum energy is called activation energy E_(a) Large the value of activation energy, smaller the value of rate constant k . Larger is the value of activation energy, greater is the effect of temperature rise on rate constant k . E_(f) = Activation energy of forward reaction E_(b) = Activation energy of backward reaction Delta H = E_(f) - E_(b) E_(f) = threshold energy For two reactions, activation energies are E_(a1) and E_(a2) , rate constant are k_(1) and k_(2) at the same temperature. If k_(1) gt k_(2) , then

For a reaction, the activation energy is zero. What is the value of rate constant at 300 K if k=1.6 xx 10^(6)s^(-1) at 280 K (R= 8.31 JK^(-1)mol^(-1)) ?

A reaction has a rate constant k=8.54 xx 10^(-4)M s^(-1) at 45^(@) C and an activation energy, E_(a)=90.8KJ . What is the value of K at 25^(@) C?

The decomposition of phosphine, 4PH_(3)(g) to P_(4)(g) + 6H_(2)(g) has rate law , Rate = k[PH_(3)] . The rate constant is 6.0 xx 10^(-4) s^(-1) at 300 K and activation energy is 3.05 xx 10^(5) J mol^(-1) . Calculate the value of the rate constant at 310 K ( R= 8.314 JK^(-1)mol^(-1))

ERRORLESS-CHEMICAL KINETICS-NCERT BASED QUESTIONS (Collision Theory, Energy of Activation and Arrhenius Equation)
  1. Activation energy of any reaction depends on

    Text Solution

    |

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

    Text Solution

    |

  3. For a reaction, activation energy (Ea ) =0 and rate constant, k = 1.5 ...

    Text Solution

    |

  4. The activation energy of a reaction is zero. The rate constant of this...

    Text Solution

    |

  5. The rate constant is given by the equation k = P.Ze^(-E//RT). Which fa...

    Text Solution

    |

  6. Chemical reactions with very high E(a) values are generally

    Text Solution

    |

  7. In the given graph the activation energy , E(a) for the reverse reacti...

    Text Solution

    |

  8. If the activation enery for the forward reaction is 150 "kJ mol"^(-1) ...

    Text Solution

    |

  9. The rate constant (K') of one reaction is double of the rate constant ...

    Text Solution

    |

  10. The role of a catalyst is to change

    Text Solution

    |

  11. In the presence of a catalyst, the heat evolved or absorbed during the...

    Text Solution

    |

  12. For a reversible reaction where the forward reaction is exotherminc, w...

    Text Solution

    |

  13. A large increase in the rate of a reaction for a rise in temperature i...

    Text Solution

    |

  14. On increasing the temperature, the rate of the reaction increases beca...

    Text Solution

    |

  15. The minimum energy a molecule should possess in order to enter into a ...

    Text Solution

    |

  16. Activation energy is

    Text Solution

    |

  17. The reason for almost doubling the rate of reaction on increasing the ...

    Text Solution

    |

  18. The activation energy for a reaction at the temperature T K was found ...

    Text Solution

    |

  19. Collision theory is applicable to

    Text Solution

    |

  20. Pick the appropriate choice about collision theory of reaction rates

    Text Solution

    |