Home
Class 11
CHEMISTRY
When a bottle of perfume is opened, odor...

When a bottle of perfume is opened, odorous molecules mix with air and slowly diffuse throughout the entire room. Which is not correct for this process?

A

`DeltaG=-ve`

B

`DeltaGH~~0`

C

`DeltaS=-ve`

D

`DeltaS=+ve`

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaS` increases and thus `+ve`.
Promotional Banner

Topper's Solved these Questions

  • THERMOCHEMISTRY

    P BAHADUR|Exercise Exercise 9 Advance numerical problems|31 Videos

Similar Questions

Explore conceptually related problems

If we open a bottle of perfume, its smell spreads in the entire room with in a short time due to the process of

A bottle of perfume was opened in a room. The smell of its vapours spread in the entire room. Name the property of gases which is responsible for this behaviour of perfume vapours.

When a bottle of scent or ammonia is opened in one corner of a room, it can be smelled at the farthest corner after sometime due to the process of diffusion . At this stage , an equilibrium is reached due to the same concentration in space . At this point .

When a bottle of scent is kept open in a corner of a room its odour is felt in all parts of the room. This is due to the phenomenon of:

The constant motion and high velocities of gas particles lead to some important practical consquences. One such consquences is that gases mix rapidly when they come in contact. Take the stopper off a bottle of perfume, for instance, and the odour will spread rapidly through the room as perfume molecules mix with the molecules in the air. This mixing of different gases by random molecular motion and with frequent collision is called diffusion. A similar process in which gas molecules escape without collision through a tiny hole into a vacuum is called effusion. Both the processes follow Graham's law which is mathematically put as r prop sqrt(1//d) . The average distance travelled by molecules between successive collisions is called mean free path. Answer the following questions on the basis of the above information: Select the correct statement(s).

The constant motion and high velocities of gas particles lead to some important practical consquences. One such consquences is that gases mix rapidly when they come in contact. Take the stopper off a bottle of perfume, for instance, and the odour will spread rapidly through the room as perfume molecules mix with the molecules in the air. This mixing of different gases by random molecular motion and with frequent collision is called diffusion. A similar process in which gas molecules escape without collision through a tiny hole into a vacuum is called effusion. Both the processes follow Graham's law which is mathematically put as r prop sqrt(1//d) . The average distance travelled by molecules between successive collisions is called mean free path. Answer the following questions on the basis of the above information: When CO_(2) under high pressure is released from a fire extinguisher, particles of solid CO_(2) are formed, despite the low sublimation temperature (-77^(@)C) at 1 atm because

The constant motion and high velocities of gas particles lead to some important practical consquences. One such consquences is that gases mix rapidly when they come in contact. Take the stopper off a bottle of perfume, for instance, and the odour will spread rapidly through the room as perfume molecules mix with the molecules in the air. This mixing of different gases by random molecular motion and with frequent collision is called diffusion. A similar process in which gas molecules escape without collision through a tiny hole into a vacuum is called effusion. Both the processes follow Graham's law which is mathematically put as r prop sqrt(1//d) . The average distance travelled by molecules between successive collisions is called mean free path. Answer the following questions on the basis of the above information: X mL H_(2) effuses through a hole in a container in 5 s . The time taken for the effusion of the same volume of the gas specified below under identical conditions is

The constant motion and high velocities of gas particles lead to some important practical consquences. One such consquences is that gases mix rapidly when they come in contact. Take the stopper off a bottle of perfume, for instance, and the odour will spread rapidly through the room as perfume molecules mix with the molecules in the air. This mixing of different gases by random molecular motion and with frequent collision is called diffusion. A similar process in which gas molecules escape without collision through a tiny hole into a vacuum is called effusion. Both the processes follow Graham's law which is mathematically put as r prop sqrt(1//d) . The average distance travelled by molecules between successive collisions is called mean free path. Answer the following questions on the basis of the above information: Select the incorrect statement(s).

P BAHADUR-THERMODYNAMICS-Exercise
  1. Select the correct statements for ideal gases: 1. ((delH)/(delT))(P)...

    Text Solution

    |

  2. 1mole each of CaCl2, Al4C3, Mg2C3 reacts with excess water in separate...

    Text Solution

    |

  3. When a bottle of perfume is opened, odorous molecules mix with air and...

    Text Solution

    |

  4. The Gibbs energy change and standard Gibbs energy change for a reactio...

    Text Solution

    |

  5. The standard change in Gibbs energy for the reaction: H2O hArr H^+ +OH...

    Text Solution

    |

  6. Identify the correct statement for change of Gibbs energy for a system...

    Text Solution

    |

  7. A monoatomic gas is suddenly compressed to 1//8 of its original volume...

    Text Solution

    |

  8. The enthalpy and entropy change for the reaction, Br(2)(l)+Cl(2)(g)r...

    Text Solution

    |

  9. P-V plots for two gases during adiabatic expansion are shown in figure...

    Text Solution

    |

  10. For an adiabatic expansion of a perfect gas dP//P is equal to :

    Text Solution

    |

  11. The poisson's ratio for O(2) is 1.4. Which of the following are correc...

    Text Solution

    |

  12. Which species possesses negative value of specific heat?

    Text Solution

    |

  13. In which process net work done is zero ?

    Text Solution

    |

  14. The net work done through a series of changes reported in figure for a...

    Text Solution

    |

  15. Specific heat of a substance at m.pt. or b.pt. for isothermal process ...

    Text Solution

    |

  16. If for the reaction, 2Mg((s)) + O(2(g)) to 2MgO((s)), at 27^@C Delt...

    Text Solution

    |

  17. The ratio of slopes of P-V plots for reversible adiabatic process and ...

    Text Solution

    |

  18. 300K a gas (gamma = 5//3) is compressed suddenly so that its pressure ...

    Text Solution

    |

  19. Select the incorrect statements for the equillibrium under standard co...

    Text Solution

    |

  20. Heat of neutralisation of strong acid and strong base under 1 atm and ...

    Text Solution

    |