Home
Class 12
CHEMISTRY
The half-life of decomposition of gaseou...

The half-life of decomposition of gaseous `CH_(3)CHO` at initial pressure of `365 mm` and `170 mm` of `Hg` were `420 sec` and `880 sec` respectively. The order of the reaction is:

A

2

B

4

C

6

D

8

Text Solution

Verified by Experts

The correct Answer is:
1

`t_(1//2)prop(1)/(a^(n-1))" "["Here "a propP]" "(880)/(410)=[(364)/(170)]^(n-1)" ":.n=2`
Promotional Banner

Topper's Solved these Questions

  • CARBONYL COMPOUNDS (ALDEHYDES & KETONES ) & CARBOXYLIC ACID

    RESONANCE|Exercise Part -IV|23 Videos
  • CHEMISTRY IN EVERYDAY LIFE

    RESONANCE|Exercise ORGANIC CHEMISTRY(Chemistry in every day life)|31 Videos

Similar Questions

Explore conceptually related problems

The half-life for a reaction at initial concentration of 0.5 and 1.0 "mole litre"^(-1) are 200 sec and 100 sec respectively. The order of the reaction is

At 500 K, the half-life period of a gaseous reaction at the initial pressure of 80 kPa is 350 sec. When the pressure is 40 kPa, the half life period is 175 sec. The order of reaction is

The decomposition of N_(2)O_(5) at an initial pressure of 380 mm and 50^(@)C is 50% complete in 56 minutes and 71% complete in 100 minutes. What is the order of reaction? How much of N_(2)O_(5) will decomposes in 100 minutes at 50^(@)C but at an initial pressure of 500 mm ?

The half -lie period for the decomposition of AB_(2)(g) at 100mm pressure is 10min and at 200mm pressure is 5 min, the order of reaction is

Catalytic decomposition of nitrous oxide by gold at 900^(@)C at an initial pressure of 200 mm was 50% in 53 minute and 73% in 100 minute. (a) What is the order of reaction? (b) Calculate velocity constant. (c ) How much will it decompose in 100 minute at the same temperature but at an initial pressure of 600 mm ?

Knowledge Check

  • The half-life for a reaction at initial concentration of 0.5 and 1.0 "mole litre"^(-1) are 200 sec and 100 sec respectively. The order of the reaction is

    A
    `0`
    B
    `1`
    C
    `2`
    D
    `3`
  • At 500 K, the half-life period of a gaseous reaction at the initial pressure of 80 kPa is 350 sec. When the pressure is 40 kPa, the half-life period is 175 sec. The order of the reaction is

    A
    zero
    B
    one
    C
    two
    D
    three
  • At 500 K, the half-life period of a gaseous reaction at the initial pressure of 80 kPa is 350 sec. When the pressure is 40 kPa, the half life period is 175 sec. The order of reaction is

    A
    zero
    B
    one
    C
    two
    D
    three
  • RESONANCE-CHEMICAL KINETICS-PHYSICAL CHEMITRY (CHEMICAL KNIETICS & RADIOACTIVITY)
    1. The half-life of decomposition of gaseous CH(3)CHO at initial pressure...

      Text Solution

      |

    2. A reaction, which is second order,has a rate constant of 0.002 L mol^(...

      Text Solution

      |

    3. In the following reaction A rarr B+C, rate constant is 0.001Ms^(-1). I...

      Text Solution

      |

    4. For the reaction A rarr products , the graph of the fraction of A rema...

      Text Solution

      |

    5. For the zero order reaction A rarr B+C, initial concentration of A is ...

      Text Solution

      |

    6. Decomposition of Hl (g) on Gold surface is zero order reaction. Initia...

      Text Solution

      |

    7. Which of the following statement is incorrect ?

      Text Solution

      |

    8. The rate expression for reaction A(g) +B(g) rarr C(g) is rate =k[A]^(1...

      Text Solution

      |

    9. 2NO+2H(2)rarr N(2)+2H(2)O. The experimental rate law for above reactio...

      Text Solution

      |

    10. underset(Z)overset(M)()A(g)rarr underset(Z-4)overset(M-8)()B(g)+(alpha...

      Text Solution

      |

    11. The reaction A(g) + 2B(g) rarr C(g) + D(g) is an elementary process. I...

      Text Solution

      |

    12. For the reactions : 4KClO (3) rarr 3KClO(4)+KCl if " "-(d[KClO...

      Text Solution

      |

    13. Half lives of decomposition of NH(3) on the surface of a catalyst for ...

      Text Solution

      |

    14. In the reaction A rarr products, time required to complete 50% reactio...

      Text Solution

      |

    15. The graph between concentration (X) of the Product and time of the rea...

      Text Solution

      |

    16. The rate constant of the reaction A rarr 2B is 1.0 xx 10^(-3) mol "lit...

      Text Solution

      |

    17. At 227^(@)C , the presence of catalyst causes the activation energy of...

      Text Solution

      |

    18. Half life of reaction : H(2)O(2)(aq) rarr H(2)O(l)+(1)/(2)O(2)(g)is in...

      Text Solution

      |

    19. A first - order reaction is 20% complete in 10 minutes. Calculate the ...

      Text Solution

      |

    20. A subtance undergoes first order decomposition involving two parallel ...

      Text Solution

      |