Home
Class 12
CHEMISTRY
A first-order reaction which is 30% comp...

A first-order reaction which is `30%` complete in `30` minutes has a half-life period of

A

`24.2min`

B

`58.2min`

C

`102.2min`

D

`120.2min`

Text Solution

Verified by Experts

The correct Answer is:
B
`k=(2.303)/(t)log.(a)/(a-x)`
`(0.693)/(T)=(2.303)/(t)log.(100)/(100-30)`
`:.T=58.2` min.
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    ERRORLESS|Exercise Assertion & Reason|6 Videos

  • CHEMICAL KINETICS

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Graphical Questions)|7 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

A first order of reaction is 75% complete in 18 minute. What is the half-life period for the reaction ?

One-fourth of a first order reaction is completed in 32 minutes. What is the half-life period of this reaction?

Three-fourth of a first order reaction is completed in 32 minutes. What is the half-life period of this reaction ?

One-fourth of a first order reaction is completed in 32 minutes. What is the half-life period of this reaction?

The three fourth of a first order reaction is completed in 32 minutes. What is the half life period of the reaction?

A first order reaction is 75% complete in 60 min. Find the half life period of the reaction?

90% of a first order reaction was completed in 100 min .What is the half life of the reaction ?

A first order reaction in 75% complete is 60 minutes. Find the half life of this reaction.

A first order reaction is 50 % completed in 30 minutes . The rate constant of the reaction is

ERRORLESS-CHEMICAL KINETICS-PAST YEARS QUESTIONS
  1. The rate constant of the reaction A rarr B is 0.6 xx 10^(-3) mole per ...

    Text Solution

    |

  2. The decomposition of phosphine [PH(3)] on tungsten at low pressure is ...

    Text Solution

    |

  3. A first-order reaction which is 30% complete in 30 minutes has a half-...

    Text Solution

    |

  4. In a first order reaction A to B, if k is rate constant and initial co...

    Text Solution

    |

  5. The rate of a first order reaction is 1.5 xx 10^(-2) mol L^(-1) "min"^...

    Text Solution

    |

  6. For a first order reaction A rarrB , the reaction rate at reactant con...

    Text Solution

    |

  7. When initial concentration of a reactant is doubled in a reaction, its...

    Text Solution

    |

  8. The rate constant of a reaction is 0.69 xx 10^(-1)min^(-1) and the ini...

    Text Solution

    |

  9. A first order reaction is half completed in 45 minutes. How long does ...

    Text Solution

    |

  10. The half life of a substance in a certain enzyme catalyzed reaction is...

    Text Solution

    |

  11. T(50) of first order reaction is 10 min. starting with 10 "mol"^(-1) r...

    Text Solution

    |

  12. The half-life for the reaction N(2)O(5) to 2 NO(2) + (1)/(2) O(2) is 2...

    Text Solution

    |

  13. The rate of a first-order reaction is 0.04 mol L^(-1)s^(-1) at 10 sec...

    Text Solution

    |

  14. Mechanism of a hypothetical reaction X(2) + Y(2) rarr 2XY is given b...

    Text Solution

    |

  15. A first order reaction has a specific reaction rate of 10^(-2) sec^(-1...

    Text Solution

    |

  16. The correct difference between first and second order reactions is tha...

    Text Solution

    |

  17. When initial concentration of the reactant is doubled, the half-life p...

    Text Solution

    |

  18. If the rate constant for a first order reaction is k, the time (t) req...

    Text Solution

    |

  19. A reaction having equal energies of activation for forward and reverse...

    Text Solution

    |

  20. The addition of catalyst during a chemical reaction alters which of th...

    Text Solution

    |