Home
Class 12
CHEMISTRY
A reaction takes place in various steps....

A reaction takes place in various steps. The rate constatn for first, second, third and fifth steps are `k_(1),k_(2),k_(3)` and `k_(5)` respectively The overall rate constant is given by
`k=(k_(2))/(k_(3))(k_(1)/(k_(5)))^(1//2)`
If activation energy are 40, 60, 50, and 10 kJ/mol respectively, the overall energy of activation (kJ/mol) is :

A

10

B

20

C

25

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETIC & NUCLEAR CHEMISTRY

    NARENDRA AWASTHI|Exercise Level 2 (Q.33 To Q.35)|2 Videos
  • CHEMICAL KINETIC & NUCLEAR CHEMISTRY

    NARENDRA AWASTHI|Exercise Level 3 - Passage|1 Videos
  • CHEMICAL KINETIC & NUCLEAR CHEMISTRY

    NARENDRA AWASTHI|Exercise Level 2|2 Videos
  • SURFACE CHEMISTRY

    NARENDRA AWASTHI|Exercise Level 3 - Assertion - Reason Type Questions|1 Videos

Similar Questions

Explore conceptually related problems

The rate constants of a reaction at 300K and 280 K respectively are K_(1) and K_(2) . Then

A certain endothermic reaction: Ato Product, DeltaH=+ve proceeds ina sequence of three elementary steps with the rate constant K_(1),K_(2) and K_(3) and each one having energy of activation E_(1),E_(2) and E_(3) respectively at 25^(@)C . The observed rate constannt for the reaction is equal to K_(3)sqrt((K_(1))/(K_(2))) . A_(1),A_(2) and A_(3) are Arrhenius parameters respectively. The observed energy of activation for the reaction is

What is the ratio of the rate constants K_(1) and K_(2) ?

A chemical reaction occurs in three paths having rate constants k_(1),k_(2) and k_(3) respectively. If Ea_(1),Ea_(2) and E_(a_(3) are 4,5 and 8kJ respectivel and overall rate constant k=(k_(1)k_(3))/(k_(2)) . Assuming A_(av)=(A_(1)A_(3))/(A_(2)) the overall energy of activation in kJ is __________

A certain endothermic reaction: Ato Product, DeltaH=+ve proceeds ina sequence of three elementary steps with the rate constant K_(1),K_(2) and K_(3) and each one having energy of activation E_(1),E_(2) and E_(3) respectively at 25^(@)C . The observed rate constannt for the reaction is equal to K_(3)sqrt((K_(1))/(K_(2))) . A_(1),A_(2) and A_(3) are Arrhenius parameters respectively. Presence of a catalyst decreasesthe energy of activation of each path by half the value of E_(1) . Assuming the other factors same, the observed energy of activation would be

The rate constant K_(1) and K_(2) for two different reactions are are 10^(16)e^(-2000//T) and 10^(15)e^(-1000//T) , respectively. The temperature at which K_(1)=K_(2) is

The correct option for the first ionisation enthalpy (in kJ "mol"^(-1) ) of Li, Na, K and Cs respectively is

A certain endothermic reaction: Ato Product, DeltaH=+ve proceeds ina sequence of three elementary steps with the rate constant K_(1),K_(2) and K_(3) and each one having energy of activation E_(1),E_(2) and E_(3) respectively at 25^(@)C . The observed rate constannt for the reaction is equal to K_(3)sqrt((K_(1))/(K_(2))) . A_(1),A_(2) and A_(3) are Arrhenius parameters respectively. The observed Arrhebius parameter for the reaction is

NARENDRA AWASTHI-CHEMICAL KINETIC & NUCLEAR CHEMISTRY-Level 2 (Q.3 To Q.32)
  1. The reaction A(g)toB(g)+2C(g) is a first order reaction with rate cons...

    Text Solution

    |

  2. A(aq)rarrB(aq)+C(aq) is first order reaction. "Time"" "t" "oo "...

    Text Solution

    |

  3. The gaseous decomposition reaction, A(g)rarr2B(g)+C(g) is observed to ...

    Text Solution

    |

  4. The reaction ,Sucroseoverset(H^(+))rarr Glucose + Fructose, take place...

    Text Solution

    |

  5. A gaseous compound A reacts by three independent first order process (...

    Text Solution

    |

  6. A compound A dissociates by two parallel first order paths at certain ...

    Text Solution

    |

  7. For given hypothetical elementary parallel reaction, where k1/k2 = 1/2...

    Text Solution

    |

  8. The reaction cis-Xunderset(k(b))overset(k(f))ltimplies trans-X is fir...

    Text Solution

    |

  9. Consider the reaction. The rate constant for two parallel reacti...

    Text Solution

    |

  10. A reaction takes place in various steps. The rate constatn for first, ...

    Text Solution

    |

  11. For reaction ArarrB, the rate constant k(1)=A(1)e^(-Ea(1//(RT))) and f...

    Text Solution

    |

  12. For first order parallel reactions k(1) and k(2) are 4and 2min(-1) re...

    Text Solution

    |

  13. In the series reaction Aoverset(K(2))(rarr)Boverset(K(2))(rarr)Cover...

    Text Solution

    |

  14. The mechanism of esterification in presence of acid catalyst (H(2)SO(...

    Text Solution

    |

  15. For the first order reaction A rarr B +C , carried out at 27^(@) C . I...

    Text Solution

    |

  16. Upon irradiating californium with neutrons, a scientist discovered a ...

    Text Solution

    |

  17. The average (mean) life of a radio nuclide which decays by parallel pa...

    Text Solution

    |

  18. The radioactive decay .(83)^(211)Birarr(81)^(207)Ti , takes place in ...

    Text Solution

    |

  19. A fresh radioactive mixture contians short lived sppecies A and B. Bot...

    Text Solution

    |

  20. In order to determine the volume of blood in an animal, a 1.0mL sample...

    Text Solution

    |