Home
Class 11
CHEMISTRY
The expansion of a gas into an evacuated...

The expansion of a gas into an evacuated space takes place non-spontaneously.
A process in which all steps cannot be retraced by themselves is called a spontaneous process.

A

If both the statements are TRUE and STATEMENT-2 is the correct explanation of STATEMENT-18

B

If both the statements are TRUE but STATEMENT-2 is NOT the correct explanation of STATEMENT-18

C

If STATEMENT-1 is TRUE and STATEMENT-2 is FALSE

D

If STATEMENT-1 is FALSE and STATEMENT-2 is TRUE

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    NARENDRA AWASTHI|Exercise Level 3 - One Or More Answers Are Correct|1 Videos

  • THERMODYNAMICS

    NARENDRA AWASTHI|Exercise Level 3 - Match The Column|2 Videos

  • THERMODYNAMICS

    NARENDRA AWASTHI|Exercise Level 2 (Q.1 To Q.30)|1 Videos

  • STOICHIOMETRY

    NARENDRA AWASTHI|Exercise Level 3 - Subjective Problems|20 Videos

Similar Questions

Explore conceptually related problems

Which process takes place during meiosis?

The communication process, in which space serves as the communication channel, is called space communication. (Yes/ No)

In changing the state of a gas adiabatically from an equilibrium state A to another equilibrium state B, an amount of work equal to 22.3 Jis done on the system. If the gas is taken from state A to B via a process in which the net heat absorbed by the system is 9.35 cal, how much is the net work done by the system in the latter case ? (Take 1 cal = 4.19 J)

Adsorption of a gas on the surface of solid is generally accompanied by decrease in entropy, still it is a spontaneous process. Explain.

When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place.

In 1916 Langmuir proposed theory of adsorption of a gas on the surface of the solid to be made up of elementary sites each of which would adsorb one gas. It is assumed that all adsorption sites are equivalent and the ability of a gas molecule to get bound to any one site is independent whether or not the neighbouring sites are occupied. Additionally, it is also assumed that dynamic equilibrium exists between adsorbed and non adsorbed gas molecule. Following principles can be obtained from Langmuir adsorption isotherm The gas adsorbed behaves ideally in a vapour phase . Only monolayer adsorption fakes place . The surface of the solid is homogeneous . There are no lateral interactive force between the adsorbate molecule . The adsorbed gas molecules are localized . How many layers of adsorption takes place ?

In 1916 Langmuir proposed theory of adsorption of a gas on the surface of the solid to be made up of elementary sites each of which would adsorb one gas. It is assumed that all adsorption sites are equivalent and the ability of a gas molecule to get bound to any one site is independent whether or not the neighbouring sites are occupied. Additionally, it is also assumed that dynamic equilibrium exists between adsorbed and non adsorbed gas molecule. Following principles can be obtained from Langmuir adsorption isotherm The gas adsorbed behaves ideally in a vapour phase . Only monolayer adsorption fakes place . The surface of the solid is homogeneous . There are no lateral interactive force between the adsorbate molecule . The adsorbed gas molecules are localized . Which type of equilibrium exists between adsorbed and non adsorbed gas molecule.

NARENDRA AWASTHI-THERMODYNAMICS-Exercise
  1. All combustion reactions are exothermic. Enthalpies of products are ...

    Text Solution

    |

  2. Enthalpy of neutralization is defined as the enthalpy change when 1 mo...

    Text Solution

    |

  3. Assertion:-Internal energy of a real gas may change during expansion a...

    Text Solution

    |

  4. What is the power of a machine which does 2000 joules of work in 10 se...

    Text Solution

    |

  5. The expansion of a gas into an evacuated space takes place non-spontan...

    Text Solution

    |

  6. Write the structural formulae for : 4-methylpent-2-ene

    Text Solution

    |

  7. 2 mole of an ideal gas at 27^(@)C expands isothermally and reversibly ...

    Text Solution

    |

  8. A diatomic ideal gas is expanded according to PV^(3) = constant, under...

    Text Solution

    |

  9. A heat engine operating between 227^(@)C and 77^(@)C absorbs 10 kcal o...

    Text Solution

    |

  10. Write the structural formulae for : 2-methylpropan-2-ol

    Text Solution

    |

  11. Molar heat capacities at constant pressure for A, B and C are 3, 1.5 a...

    Text Solution

    |

  12. Standard molar enthalpy of combustion of glucose is -2880 kJ. If only ...

    Text Solution

    |

  13. If Delta(f)H^(@)(C(2)H(4)) and Delta(f)H^(@)(C(2)H(6)) are x(1) and x...

    Text Solution

    |

  14. The integral enthalpies of solution of anhydrous CuSO(4) (s) and hydra...

    Text Solution

    |

  15. If enthalpy of neutralisation of HCl by NaOH is -57 kJ " mol"^(-1) and...

    Text Solution

    |

  16. If enthalpy of neutralisation of HCl by NaOH is -57 kJ " mol"^(-1) and...

    Text Solution

    |

  17. x g sample of NH(4)NO(3) is decomposed in a Bomb calorimeter. The temp...

    Text Solution

    |

  18. A heat engine operating between 227^(@)C and 77^(@)C absorbs 10 kcal o...

    Text Solution

    |

  19. Calculate work done in chemical reaction (in kcal) A(s)+3B(g)rarrC(l...

    Text Solution

    |

  20. Infigure, if AB II DC,find the value of x . .

    Text Solution

    |