Home
Class 11
CHEMISTRY
75% of a first-order reaction was comple...

`75%` of a first-order reaction was completed in `32` minutes, when was `50%` of the reaction completed ?

A

16 minutes

B

8 minutes

C

4 minutes

D

32 minutes

Text Solution

Verified by Experts

The correct Answer is:
A
For a first order reaction `t_(0.75)=2xxt_(0.75)`
Here `t_(0.75)=32` min
`therefore t_(1//2) = t_(0.50)=(32)/(2)=16` min
Promotional Banner

Topper's Solved these Questions

  • RATES OF REACTIONS AND CHEMICAL KINETICS

    DINESH PUBLICATION|Exercise Selected Straight|49 Videos

  • RATES OF REACTIONS AND CHEMICAL KINETICS

    DINESH PUBLICATION|Exercise Comprehension|13 Videos

  • RATES OF REACTIONS AND CHEMICAL KINETICS

    DINESH PUBLICATION|Exercise Ultimate Preparatory Package|29 Videos

  • PHYSICAL AND CHEMICAL EQUILIBRIA

    DINESH PUBLICATION|Exercise ULTIMATE PREPARATORY PACKAGE|13 Videos

  • REDOX REACTIONS

    DINESH PUBLICATION|Exercise Reasoning Type Questions|4 Videos

Similar Questions

Explore conceptually related problems

75% of a first order reaction was completed in 32 min. When was 50% of the reaction completed ?

75% of a first order reaction is completed in 32 minutes. 50% of the reaction would have been completed in

If 75% of first order reaction is completed in 32 min, then 50% of the reaction would be complete in:

A first orde reaction is 75% completed after 32min. When was 50% of the reaction completed?

DINESH PUBLICATION-RATES OF REACTIONS AND CHEMICAL KINETICS-Revision Question
  1. For the reaction A rarr B, the rate law expression is rate =k[A]. Whic...

    Text Solution

    |

  2. The reaction N(2)O(5) (in C Cl(4) solution) rarr 2NO(2) (solution) +...

    Text Solution

    |

  3. 75% of a first-order reaction was completed in 32 minutes, when was 50...

    Text Solution

    |

  4. Th Arrhenius equation expressing the effect of temperature on the rate...

    Text Solution

    |

  5. The first order rate constant for the decomposition of N(2)O(5) is 6.2...

    Text Solution

    |

  6. A reaction is 50 % complete in 2 hours and 75 % complete in 4 hours th...

    Text Solution

    |

  7. Velocity constant of a reactin at 290 K was found to be 3.2 xx 10^(-3)...

    Text Solution

    |

  8. If reaction between A and B to give C shows first order kinetics in A ...

    Text Solution

    |

  9. For a first order reaction, the half-life period is independent of

    Text Solution

    |

  10. A catalyst increases rate of reaction by

    Text Solution

    |

  11. For a first order reaction, obatin a positive slope, we need to plot [...

    Text Solution

    |

  12. Given t(1//2) =3 hr. Then how many gram of a substance will remain aft...

    Text Solution

    |

  13. For the reaction A + B rarr C + D, doubling the concentration of both ...

    Text Solution

    |

  14. The effect of temperature on reaction rate is given by

    Text Solution

    |

  15. The decomposition of a substance follows first order kinetics. If its ...

    Text Solution

    |

  16. For a first order reaction, the plot of log k against 1/T is a straigh...

    Text Solution

    |

  17. "1 dm"^(3) of 2 M CH(3)COOH is mixed with "1 dm"^(3) of 3 M ethanol to...

    Text Solution

    |

  18. ROOR'+H(2)Ooverset("HCl")(rarr)RCOOH+R'OH ltbtgt What type of reaction...

    Text Solution

    |

  19. 75 % of first order reaction is complete in 30 minutes. What is the ti...

    Text Solution

    |

  20. For a given reaction, t(1//2) = 1 //ka. The order of this reaction is

    Text Solution

    |