Home
Class 11
CHEMISTRY
1 mol" of "N(2) gas at 0.8 atm takes 38s...

`1 mol" of "N_(2)` gas at `0.8 atm` takes 38s to diffuse through a pinhole, whereas 1 mol of an unknown gas at `1.6 atm` takes 57s to diffuse through the same pinhole. The molecular weight of unknown gas is

A

126

B

64

C

80

D

252

Text Solution

Verified by Experts

The correct Answer is:
D
`(n_(1))/(t_(1)) xx (t_(2))/(n_(2)) = (p_(1))/(p_(2)) xx sqrt((M_(2))/(M_(1))) implies (1)/(38)xx (57)/(1)= (0.8)/(1.6) sqrt((M_(2))/(28)) implies M_(2) = 252`
Promotional Banner

Topper's Solved these Questions

  • STATES OF MATTER

    BRILLIANT PUBLICATION|Exercise LEVEL II |55 Videos

  • STATES OF MATTER

    BRILLIANT PUBLICATION|Exercise LEVEL III (Single Correct Answer Type)|10 Videos

  • STATES OF MATTER

    BRILLIANT PUBLICATION|Exercise QUESTIONS |24 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    BRILLIANT PUBLICATION|Exercise LEVEL-I|55 Videos

  • STRUCTURE OF ATOMS

    BRILLIANT PUBLICATION|Exercise LEVEL - III (Linked Comprehension Type)|8 Videos

Similar Questions

Explore conceptually related problems

One mole of N_(2) gas at 0.8 atm takes 38 sec to diffuse through a pin hole whereas 1 mole of an unknown compound of xenon with fluorine at 1.6 atm takes 57 sec to diffuse through the same hole. Calculate the molecular formula of the compound

A certain volume of Ar gas require 45 sec to effuse through a hole at a certain pressure and temperature. The same volume of another gas of unknown molecular weight require 60 sec to pass through the same hole under the same condition of temperature and pressure. The molecular weight of gas is

The number of atoms in 0.1 mol of a triatomic gas is'

1.30 litre of O_(2) gas at 1 atm and 300 K is exposed to a solid surface of 3g in a container. After adsorption the pressure of O_(2) is reduced to 0.7 atm. What is the value of x/m

BRILLIANT PUBLICATION-STATES OF MATTER -LEVEL I
  1. The vapour pressure of water at 80^(@)C" is "355 mm Hg. A one-litre ve...

    Text Solution

    |

  2. Boron forms a variety of unusual compounds with hydrogen. Achemist iso...

    Text Solution

    |

  3. A small quantity of gaseous NH(3)" and "HBr are introduced simultaneou...

    Text Solution

    |

  4. Which one of the following statement is not true about the effect of a...

    Text Solution

    |

  5. 2 moles of a gas confined in a 4 L flask exert a pressure of 9.0 atm o...

    Text Solution

    |

  6. 1 mol" of "N(2) gas at 0.8 atm takes 38s to diffuse through a pinhole,...

    Text Solution

    |

  7. What will be the molecular diameter of helium if van der Waals constan...

    Text Solution

    |

  8. Rate of diffusion of LPG (a mixture of n-butane and propane) is 1.25 t...

    Text Solution

    |

  9. Many laboratory gases are sold in steel cylinders with a volume of 43....

    Text Solution

    |

  10. At STP, a container has 1 mole of He, 2 mole Ne, 3 mole O(2) and 4 mol...

    Text Solution

    |

  11. A rigid container containing 5 mole H(2) gas at same pressure and temp...

    Text Solution

    |

  12. The most probable speed of 8g of H(2) is 200 ms^(-1). Average kinetic ...

    Text Solution

    |

  13. The ratio among most probable velocity, mean velocity and root mean sq...

    Text Solution

    |

  14. Calculate relative rate of effusion of SO(2)" to "CH(4), if the mixtur...

    Text Solution

    |

  15. A balloon weighing 50 kg is filled with 685 kg of helium at 1 atm pres...

    Text Solution

    |

  16. Calculate the volume occupied by 16 gram O(2), at 300 K and 8.31 Mpa i...

    Text Solution

    |

  17. If Pd v/s. P(where P denotes pressure in atm and d denotes density in ...

    Text Solution

    |

  18. Gas molecules each of mass 10^(-26)kg are taken in a container of volu...

    Text Solution

    |

  19. For a real gas (mol. Mass = 60) if density at critical point is 0.80 g...

    Text Solution

    |

  20. Two flasks A and B of 500 mL each are respectively filled with O(2) an...

    Text Solution

    |