Home
Class 12
CHEMISTRY
The first order rate constant for the de...

The first order rate constant for the decomposition of `N_2O_5` is `6.2 xx 10^(-4)s^(-1)`. The `t_(1//2)` of decomposition is

A

1117.7

B

111.77

C

223.4

D

160.9

Text Solution

Verified by Experts

The correct Answer is:
A

`t_(1//2)=(0.693)/(k)=(0.693)/(6.2xx10^(-4))`=1117.7 s
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    MTG GUIDE|Exercise CHECK YOUR NEET VITALS|25 Videos
  • CHEMICAL KINETICS

    MTG GUIDE|Exercise AIPMT/NEET (MCQs)|22 Videos
  • CHEMICAL KINETICS

    MTG GUIDE|Exercise AIPMT/NEET (MCQs)|22 Videos
  • BIOMOLECULES

    MTG GUIDE|Exercise AIPMT/NEET (MCQS)|19 Videos
  • CHEMISTRY IN EVERYDAY LIFE

    MTG GUIDE|Exercise AIPMT/NEET |9 Videos

Similar Questions

Explore conceptually related problems

The first order rate constant for the decomposition of N_(2)O_(5) is 6.2 xx 10^(-4) sec^(-1) . The t_(1//2) of decomposition is

The first order rate constant for the decomposition of N_(2)O_(5) is 6.2 xx 10^(-4)s^(-1) . The half-life period for this decomposition is

The first order rate constant for the decomposition of N_(2)O_(5) is 6.2 xx 10^(-2)s^(-1) . The half-life period for this decomposition is

The first order rate constant for dissociation of N_(2)O_(5) is 6.2xx10^(-4)s^(-1) . The half-lite period (in s) of this dissociation will be

The first order rate constant for the decomposition of CaCO_3 , at 700 K is 6.36 xx 10^(-3)s^(-1) and activation energy is 209 "kJ mol"^(-1) . Its rate constant (in s^(-1) ) at 600 K is "x" xx 10^(-6) . The value of x is ______ .(Nearest integer) [Given R=8.31 J K^(-1) "mol"^(-1) , log 6.36 xx 10^(-3)= -2.19, 10^(-4.79)= 1.62 xx10^(-5) ]

Findingf concentration and time : The rate constant for the decomposition of gasous N_(2)O_(5) at 55^(@)C is 1.7xx10^(-3)s^(-1) . If the initial concentration of N_(2)O_(5) after five half-lives ? How long will it take for the N_(2)O_(5) concentration to fall to 12.5% of its initial values ? Strategy : Because the unit of rate constant is time^(-1) , the decomposition of N_(2)O_(5) is a first order reaqction. To find [N_(2)O_(5)] after n half lives, multiply its initial concentration by (1//2)^(n) since [N_(2)O_(5)] drops by a factor of 2 during each successive haslf-life.

Rate constant for the reaction 2N_(2)O_(5) to 4NO_(2) + O_(2) is 4.98 xx 10^(-4) s^(-1) . Find the order of reaction?

The rate constant of the first order, decomposition of N_(2)O_(5) at 25^(@) is 3.00 xx 10^(-3) min^(-1) . If the initial concentration of N_(2)O_(2) is 2.00 xx 10^(-3) mol L^(-1) , How long will it take for the concentration to drop to 5.00 xx 10^(-4) mol L^(-1) ?

MTG GUIDE-CHEMICAL KINETICS-TOPICWISE PRACTICE QUESTIONS
  1. In a first order reaction, 75% of the reactants disappeared in 1.386 h...

    Text Solution

    |

  2. Cyclopropane rearranges to form propene This follows first ord...

    Text Solution

    |

  3. The first order rate constant for the decomposition of N2O5 is 6.2 xx ...

    Text Solution

    |

  4. For the first order reaction, half-life is 14 s. The time required for...

    Text Solution

    |

  5. Decomposition of H2O2 was studied by titration against KMnO4 solution....

    Text Solution

    |

  6. Which of the following expressions is correct for first order reaction...

    Text Solution

    |

  7. Which of the following statements about first order is not true?

    Text Solution

    |

  8. The rate constant, k of the reaction, N2O(2(g))rarr2NO(2(g))+1/2O(...

    Text Solution

    |

  9. The first order reaction was started with a decimolar solution of the ...

    Text Solution

    |

  10. For a first order reaction ArarrB, the reaction rate at reactant conce...

    Text Solution

    |

  11. The rate of a first order reaction is 0.4 mol L^(-1)s^(-1) at 10 minut...

    Text Solution

    |

  12. The activation energies of two reactions are E1 and E2(E1> E2). If the...

    Text Solution

    |

  13. The rate constant of a reaction at 500 K and 700 K are 0.02 s^(-1) and...

    Text Solution

    |

  14. The rate constant, the activation energy and the Arrhenius parameter o...

    Text Solution

    |

  15. The rate of reaction is doubled for every 10^@C rise in temperature. T...

    Text Solution

    |

  16. Two reactions proceed at 25^@C at the same rate. The temperature coeff...

    Text Solution

    |

  17. The rate constant (k') of one of the reaction is found to be double th...

    Text Solution

    |

  18. The rate constants k, and ką for two different reactions are 10^(16).e...

    Text Solution

    |

  19. Which of the following expression gives the effect of temperature on t...

    Text Solution

    |

  20. The plot of log k vs 1/T helps to calculate

    Text Solution

    |