Home
Class 12
CHEMISTRY
Assuming the system performs only pressu...

Assuming the system performs only pressure-volume work, show that heat absorbed by a closed system at constant volume is equal to the increase in its internal energy.

Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS

    CHHAYA PUBLICATION|Exercise LONG TYPE QUESTIONS|37 Videos

  • CHEMICAL THERMODYNAMICS

    CHHAYA PUBLICATION|Exercise Numerical Problems|47 Videos

  • CHEMICAL THERMODYNAMICS

    CHHAYA PUBLICATION|Exercise FILL IN THE BLANKS|23 Videos

  • CHEMICAL KINETICS

    CHHAYA PUBLICATION|Exercise EXERCISE (NUMERICAL PROBLEMS)|37 Videos

  • CHEMISTRY IN EVERYDAY LIFE

    CHHAYA PUBLICATION|Exercise PRACTICE SET 15|15 Videos

Similar Questions

Explore conceptually related problems

Assuming the system performs only pressure-volume work, show that heat evolved by a closed systemm at constant pressure is equal to the decrease in its enthalpy.

Pressure-volume (PV) work done by an ideal gaseous system at constant volume is (where E is internal energy of the system)

P*V Work done by an ideal gaseous system at constant volume is (E is internal energy of the system)-

The heat absorbed in a reaction at constant temperature and constant volume is

System performed pressure volume work when in between system and surrounding there is

Pressure of a gas increases when its temperature is increased at constant volume. This is because, with increase in temperature -

Pressure of a gas increases when its temperature is increased at constant volume. This is because, with increase in temperature -

Certain amount of an ideal gas (gamma = 1.4) performs 80J of work while undergoing isobaric expansion. Find the amount of heat absorbed by the gas in the process and the change in its internal energy.

Does the volume of a closed system remain fixed?

For a process occurring in a closed system, DeltaU=q . If only pressure-volume work is performed by the system then which type of process is this?

Knowledge Check

  • P*V Work done by an ideal gaseous system at constant volume is (E is internal energy of the system)-

    A
    `-(DeltaP)/(P)`
    B
    zero
    C
    `-VDeltaP`
    D
    `-DeltaE`.

  • System performed pressure volume work when in between system and surrounding there is

    A
    difference in temperature
    B
    difference in volume
    C
    difference in pressure
    D
    difference in internal energy

  • Pressure of a gas increases when its temperature is increased at constant volume. This is because, with increase in temperature -

    A
    collision frequency of the gas molecules increases.
    B
    motions of the gas molecules become more random
    C
    gas molecules make more collision with the walls of the container
    D
    compresesibility factor of the gas increases.
    • CHHAYA PUBLICATION-CHEMICAL THERMODYNAMICS-SHORT TYPE QUESTIONS
    1. Assuming the system performs only pressure-volume work, show that heat...

      Text Solution

      |

    2. Assuming the system performs only pressure-volume work, show that heat...

      Text Solution

      |

    3. Show that the total energy of ann isolated system always remains const...

      Text Solution

      |

    4. Why is the temperature of a system a state function?

      Text Solution

      |

    5. What are the conditions for a system to be in thermodynamic equilibriu...

      Text Solution

      |

    6. Give one example for each of an isobaric and isothermal process.

      Text Solution

      |

    7. Why is the sudden expansion or compression of a gas considered to be a...

      Text Solution

      |

    8. Give thermodynamic definition of heat and work.

      Text Solution

      |

    9. Internal energy is a property of a system, but heat is not- explain.

      Text Solution

      |

    10. Show that both heat and work are path dependent quantities.

      Text Solution

      |

    11. Why does the internal enegy of a system increases with rise in tempera...

      Text Solution

      |

    12. What does pressure-volume work mean? Why is it considered that work do...

      Text Solution

      |

    13. Show that for an ideal gas the difference between the molar heat capac...

      Text Solution

      |

    14. In case of a solid or a liquid substance C(P,m)~~C(V,m), but in case o...

      Text Solution

      |

    15. For liquid ethanol at 25^(@)C,DeltaH(f)^(0)=-277.69kJ*mol^(-1). Repres...

      Text Solution

      |

    16. Reaction enthalpy for an exothermic reaction is negative- why?

      Text Solution

      |

    17. For which of the following reactions does the standard enthalpy of rea...

      Text Solution

      |

    18. Given: C(graphite, s)+O(2)(g)toCO(2)(g),DeltaH^(0)=x(1) C(graphite, ...

      Text Solution

      |

    19. At 25^(@)C,DeltaH(f)^(0)=0 for graphite, but for diamond DeltaH(f)^(0)...

      Text Solution

      |

    20. Mention two applications of Hess's law.

      Text Solution

      |