Home
Class 11
CHEMISTRY
An ideal gas is allowed to expand agains...

An ideal gas is allowed to expand against a constant pressure of 2 bar from 10 L to 50 L in one step. The amount of work done by the gas is x. If the same expansion were carried out reversibly, will the work done be higher or lower than the earlier case?

A

Lower

B

Higher

C

Same as before

D

Can't anything

Text Solution

Verified by Experts

`W =- p _(ex) ( V _(f) - V _(t) ) =- 2 xx 40 =- 80 L ` bar `= - 8 K`
The negative sign shows that work is done by the system on the surroundings. Work done will be in reversible expansion because internal pressure and external pressure are almost same at evert stem
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS

    BRILLIANT PUBLICATION|Exercise LEVEL-II (Assertion-Reason Type)|18 Videos

  • CHEMICAL THERMODYNAMICS

    BRILLIANT PUBLICATION|Exercise LEVEL-III|52 Videos

  • CHEMICAL THERMODYNAMICS

    BRILLIANT PUBLICATION|Exercise LEVEL-I|92 Videos

  • CHEMICAL BONDING AND MOLECULAR STRUCTURE

    BRILLIANT PUBLICATION|Exercise QUESTION (LEVEL -ll)|42 Videos

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

    BRILLIANT PUBLICATION|Exercise QUESTIONS (LEVEL-III ( Linked Comprehension Type ))|12 Videos

Similar Questions

Explore conceptually related problems

Agas is allowed to expand in a well-insulated container against a constant external pressure of 2.5 atm from 2.5 L to 4.5 L. The change in internal energy of the gas

Three moles of an ideal gas kept at a constant temperature of 300K are compressed from the volume of 10 litre to 5 litre. Calculate the work done required to compress this gas.

BRILLIANT PUBLICATION-CHEMICAL THERMODYNAMICS -LEVEL-II
  1. Which of the following statements is correct?

    Text Solution

    |

  2. How many joules of heat are absorbed when 70.0 g of water is completel...

    Text Solution

    |

  3. An ideal gas is allowed to expand against a constant pressure of 2 bar...

    Text Solution

    |

  4. The enthalpy of reaction for the reaction: 2H (2 (g)) + O (2 (g)) to 2...

    Text Solution

    |

  5. In a calorimeter, the temperature increases by 6.12 K, the heat capaci...

    Text Solution

    |

  6. Equal volumes of monoatomic and diatomic gases at same initial tempera...

    Text Solution

    |

  7. The heat liberated from the combustion of 0.5 g of carbon raised the t...

    Text Solution

    |

  8. The enthalpy change for the reaction, N2(g)+3H2(g)rightarrow2NH3(g) ...

    Text Solution

    |

  9. The specific heats of l(2) in vapour and solid states are 0.031 and 0....

    Text Solution

    |

  10. Temperature of I mole of a gas is increased by 1^(@)at constant pressu...

    Text Solution

    |

  11. The bond dissociation energies for Cl(2), I (2)and ICI are 242.3, 151 ...

    Text Solution

    |

  12. Standard entropies of X(2), Y,(2) and XY(3) are 60,40 and 50JK^(-1) ...

    Text Solution

    |

  13. The heat liberated when 1.89 g of benzoic acid is burnt in a bomb calo...

    Text Solution

    |

  14. Assuming triangleH^0 and S^o do not change with temperature. Calculate...

    Text Solution

    |

  15. The amount of heat released, when 20 mL of 0.5 M NaOH is mixed with 10...

    Text Solution

    |

  16. On the basis of following thermochemical data :[Delta (f) G ^(@)H^(+) ...

    Text Solution

    |

  17. The standard enthalpy of formation of NH(3) is -46 kJ mol^(-1). If the...

    Text Solution

    |

  18. Fe (2 ) O (3 (s)) + (3)/(2) C to (3)/(2) CO (2 (g)) + 2 Fe ((s)) , Del...

    Text Solution

    |

  19. Given the following data: Determine at what temperature the follo...

    Text Solution

    |

  20. Calculate the increase in internal energy of 1 kg of water at 100^(@)C...

    Text Solution

    |