Home
Class 12
CHEMISTRY
Two substance A and B are present such t...

Two substance A and B are present such that [A]=4[B} and half life of A is 5 minutes and of B is 15 minutes. If they start decaying at the same time following first order, how much time later will the concentration of both of them would be the same?

A

5 minutes

B

10 minutes

C

12 minutes

D

15 minutes

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    PATHFINDER|Exercise QUESTION BANK|54 Videos
PATHFINDER-CHEMICAL KINETICS-QUESTION BANK
  1. For A rarrB (zero order reaction), the t(1/2) is 10 s. find out the co...

    Text Solution

    |

  2. The rate constant for a 1st order reaction is 6.909 min^-1. Therefore ...

    Text Solution

    |

  3. Two substance A and B are present such that [A]=4[B} and half life of ...

    Text Solution

    |

  4. The reaction 2NO(g) + H2(g) = N2O(g) + H2O(g) follows the rate law (dP...

    Text Solution

    |

  5. CH3COOC2H5 + H2O overset(H^+) iff CH3COOH + C2H5OH in an example of .....

    Text Solution

    |

  6. The gas phase decomposition of dimethyl ether follows first order kine...

    Text Solution

    |

  7. Consider the following 1st order competing reactions X overset(k1) rar...

    Text Solution

    |

  8. The rate of reaction is doubled for every 10^0 rise in temperature. Th...

    Text Solution

    |

  9. The rate constant, the activation energy and the arrameter parameter o...

    Text Solution

    |

  10. The rate of particular reaction quadruples when the temperature change...

    Text Solution

    |

  11. For several reactions due to increase in temperature from 300 K to 310...

    Text Solution

    |

  12. The temperature coefficient of a 1st order reaction is 2. Find out rat...

    Text Solution

    |

  13. The rate constant is given by equation k= P.Ze^(-Ea/(RT)). Which facto...

    Text Solution

    |

  14. The activation energy of a reaction is 9 kcal/mole. The increase in th...

    Text Solution

    |

  15. How will be the graph plotted between log k vs 1/T for calculating act...

    Text Solution

    |

  16. The activation energies of two reactions are Ea& E'a respectively, whe...

    Text Solution

    |

  17. For a first order reaction A rarrP, the temperature (T) dependent rate...

    Text Solution

    |

  18. In Group 15 (Nitrogen Family), find out non-metal, metalloid, metal.

    Text Solution

    |

  19. Which of the following statements is incorrect?

    Text Solution

    |

  20. If a reaction A+BrarrC is exothermic to the extent of 30 kJ/mol and th...

    Text Solution

    |