Home
Class 12
CHEMISTRY
A quantity of gas is collected in a grad...

A quantity of gas is collected in a graduated tube over the mercury. The volume of gas at `18^(@)C` is 50 mL and the level of mercuty in the tube is 100mm above the outside mercuty level. The barometer reads 750 torr. Hence, volume of gas 1 atm and `0^(@)C` is approximately:

A

22 ml

B

40 ml

C

20 ml

D

44 ml

Text Solution

Verified by Experts

The correct Answer is:
B

Under given condition,
pressure=750-100=650 Torr
`(p_(1)V_(1))/T_(1)=(p_(2)V_(2))/T_(2)rArr(650xx50)/291=(760xxV_(2))/273`
`:.V_(2)=40.1" mL"`
Promotional Banner

Topper's Solved these Questions

  • STATES OF MATTER

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise Exercise 2 (Miscellaneous Problems)|30 Videos
  • SOME BASIC CONCEPTS OF CHEMISTRY

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise EXERCISE 2|30 Videos
  • SURFACE CHEMISTRY

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise EXERCISE 2|22 Videos

Similar Questions

Explore conceptually related problems

A quantity of gas is collected in a gradutated tube over the mercury. The volume of the gas at 20^(@)C is 50.0 mL and the level of the mercury in the tube is 100 mm above the outside mercury level. The barometer reads 750 mm . Volume at STP is

The volume of a gas in discharge tube is 1.12 xx 10^(-7) ml, at 0^(@)C and 1 atm. The number of molecule of gas in the tube is-

50cc of oxygen is collected in an inverted gas jar over water.The atmospheric pressure is 99.4 kPa and the room tempareture is 27^(@)C. The water level in the jar is same as the level outside . The saturation vapour pressure at 27^(@)C is 3.4kPa. Calculate the number of moles of oxgen collected in the jar.

A barometer is an instrument that is used for the measurement of pressure The construction of the barometer is as follows: A thin narrow calibrated capillary tube is filled to the brim with a liquid such as mercury and is inverted into a through filled with the same fluid Now depending on the external atmospheric pressure the level of the inside capillary comes to rest, then the net forces on the column should be balanced Applying force balance we get P_(atm)xxA=mxxg (A is the cross-sectional area of the capillary tube) if rho is the density of the fluid, then m=rhoxxgxxh (h is the height to which mercury has risen in the capillary) Hence P_(atm)xxA=(rhoxxgxxh)xxA or P_(atm)=rhogh Faulty Barometer: An ideal barometer will show a correct reading only if the space above the mercury column is vacuum but in case if some gas column is trapped in the space above the mercury column then the barometer is classified as a faulty barometer. The reading of such a barometer will be less than the true pressure For such a faulty barometer P_(0)A=mg+P_(gas)A P_(0)=rhohg+P_(gas) or rhogh=P_(0)-P_(gas) A tube closed at one end is dipped in mercury as shown in figure such that the closed surface coincides with the mercury level in the container By how much length of the tube should be extended such that the level of Hg in the tube is 5 cm below the mercury level inside the container? (Assume temperature remains constant)

Given J-tube has 2.4 mL of air at a pressure of 1 atm. On adding mercury, volume of air is reduced to 1.9 mL as shown. Difference in the level of mercury in two columns is:

0.30 g of gas was found to occupy a volume of 82.0 mL at 27^(@)C and 3 atm. Pressure. The molecular mass of the gas is

MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-STATES OF MATTER-Exercise 2 (Miscellaneous Problems)
  1. A quantity of gas is collected in a graduated tube over the mercury. T...

    Text Solution

    |

  2. A helium atom is two times heavier than a hydrogen molecule. At 298 K,...

    Text Solution

    |

  3. As the temperature is raised from 20^(@)C to 40^(@)C the averge kineti...

    Text Solution

    |

  4. The compressibility of a gas is less than unity at STP, therefore,

    Text Solution

    |

  5. 3.2 g of S is heated to occupy a volume of 780 ml at 450^(@)C and 723 ...

    Text Solution

    |

  6. If density of a certain gas at 30^(@)C and 768 Torr is 1.35kg//m^(3), ...

    Text Solution

    |

  7. The density of phosphorus vapour at STP is 5.54 " gL"^(-1). Hence, mol...

    Text Solution

    |

  8. The intermolecular interaction that is dependent on the inverse cube o...

    Text Solution

    |

  9. If Z is a compressibility factor, van der Waals' equation at low press...

    Text Solution

    |

  10. The compressibility factor of gases is less than unity at STP. Therefo...

    Text Solution

    |

  11. For the non-zero volume of the molecules, real gas equation for n mol ...

    Text Solution

    |

  12. A 34.0 L cylinder contains 212" g"O(2) gas 27^(@)C. What mass of O(2)...

    Text Solution

    |

  13. At 298 k, which of the following gases has the lowest average molecula...

    Text Solution

    |

  14. Select the correct statements.

    Text Solution

    |

  15. Which of the following gases follows non-ideal behaviour?

    Text Solution

    |

  16. To liquefy gaseous substances whose critical temperatures are below ro...

    Text Solution

    |

  17. NH(3) gas is liquefied more easily than N(2). Hence

    Text Solution

    |

  18. A gas at a pressure of 5.0 atm is heated from 0^(@)C to 546^(@)C and s...

    Text Solution

    |

  19. At 400 K, the root mean square (rms) speed of a gas X (molecular weigh...

    Text Solution

    |

  20. Which assumption of kinetic molecular theory is not followed when a re...

    Text Solution

    |

  21. A 100 mL flask contained H(2) at 200 Torr, and a 200 mL flask containe...

    Text Solution

    |