Home
Class 12
CHEMISTRY
The half life for radioactive decay of "...

The half life for radioactive decay of `""^(14)C` is 5730 years. An archaeological artifact containing wood had only 80% of the `""^(14)C` found in a living tree. Estimate the age of the sample .

Text Solution

Verified by Experts

`k 1.209 xx 10^(-4) " year"^(-1)`
Age `to` 1848 year.
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    SUBHASH PUBLICATION|Exercise PROBLEMS SECTION|19 Videos

  • BIOMOLECULES

    SUBHASH PUBLICATION|Exercise QUESTION|77 Videos

  • CHEMISTRY IN EVERYDAY LIFE

    SUBHASH PUBLICATION|Exercise QUESTION / ANSWERS|29 Videos

Similar Questions

Explore conceptually related problems

The half- life for decay of ""^(14)C by beta -emission is 5730 years. The fraction of ""^14C decays, in a sample that is 22.920 years old, would be :

Half life for radioactive ""^(14)C is years. In how many years, 200 mg of ""^(14)C sample will be reduced to 25 mg ?

The half life period of an radioactive element is 1.4 xx 10 ^(10) years. The time in which the activity of the element is raduced to 90% of its original value is :

The decay constant for 6^(C^(14)) is 2.31xx 10^(-4) year-1 calculate the half life period.

Carbon-14 has a half life period of 5760 years. 100 mg of sample containing C-14 is reduced to 25 mg in:

The activity of an old piece of wood is just one fourth of a fresh piece of wood. If half life period of ""^(14)C is about 6000 years, the age of old piece of wood is:

C-12 and C-14 isotopes are found as 98% and 2% respectively in any sample. Number of atoms of C-14 in 12 g of sample will be

SUBHASH PUBLICATION-CHEMICAL KINETICS -PROBLEMS SECTION
  1. For the reaction R to P, the concentration of a reactant changes from ...

    Text Solution

    |

  2. In a reaction 2A product, the concentration of A decreases from 0.5 mo...

    Text Solution

    |

  3. The conversion of molecules X to Y follows second order kinetics. IF c...

    Text Solution

    |

  4. The initial concentration of N(2)O(5) in the following first order rea...

    Text Solution

    |

  5. The rate constant of a certain first order reaction is 200S^(-1). What...

    Text Solution

    |

  6. A certain first order reaction is half completed in 46 min. Calculate ...

    Text Solution

    |

  7. Show that in case of a first order reaction, the time taken for comple...

    Text Solution

    |

  8. Show that t(99%) = 2 xx t(90%)

    Text Solution

    |

  9. Rate constant of a first order reaction is 0.0693 min^(-1). Calculate ...

    Text Solution

    |

  10. The rate constant for a first order reaction is 60s^(-1). How much tim...

    Text Solution

    |

  11. A first order reaction takes 40 min for 30% decompositon.

    Text Solution

    |

  12. The half life for radioactive decay of ""^(14)C is 5730 years. An arch...

    Text Solution

    |

  13. A first order reaction is found to have a rate constant K=5.5xx10^(-14...

    Text Solution

    |

  14. A first order reaction has a rate constant 1.15 xx 10^(-3)s^(-1). How ...

    Text Solution

    |

  15. Time required to decompose SO(2)Cl(2) to half of its initial amount is...

    Text Solution

    |

  16. The rate constant of a particular reaction doubles when the temperatur...

    Text Solution

    |

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

    Text Solution

    |

  18. The rate of a chemical reaction doubles for an increase of 10K in abso...

    Text Solution

    |

  19. The rate of a reaction becomes four times when the temperature changes...

    Text Solution

    |