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Change in internal energy in an isotherm...

Change in internal energy in an isothermal process for ideal gas is

A

Zero

B

(+) ve

C

(-) ve

D

Cannot be predicted

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The correct Answer is:
A
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Statement: In the case of an ideal gas the changes in Gibbs and Helmholtz free energies are equal to each other ( DeltaG=DeltaA ) for isothermal reversible process. Explanation: There is no change in internal energies and enthalpies for ideal gas at constant temperature.

In an isothermal change, an ideal gas obeys

Knowledge Check

  • In an isothermal process for an ideal gas

    A
    `DeltaQ=0`
    B
    `DeltaW=0`
    C
    `DeltaU=0`
    D
    `DeltaV=0`

  • In an isothermal process for an ideal gas

    A
    `DeltaQ =0`
    B
    `DeltaW = 0`
    C
    `DeltaU = 0`
    D
    `DeltaV = 0`

  • For an ideal gas, in an isothermal process

    A
    Heat content remains constant
    B
    Heat content and temperature remain constant
    C
    Temperature remains constant
    D
    None of the above

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    In a isothermal change an ideal gas obey's

    The dependence of Gibbs free energy on pressure for an isothermal process of an ideal gas is given by

    The dependence of Gibbs free energy on pressure for an isothermal process of an ideal gas is given by

    For an ideal gas, (i) the change in internal energy in a constant pressure process from temperature T_1 to T_2 is equal to nC_V(T_2-T_1) , where C_V is the molar heat capacity at constant volume and n is the number of moles of the gas (ii) The change in internal enregy of the gas and the work done by the gas are equal in magnitude in an adiabatic process. (iii) The internal energy does not change in an isothermal process. ltbr. (iv) no heat is added or removed in an adiabatic process

    Let Delta U_(1) and Delta U_(2) be the changes in internal energy of an ideal gas in the processes A and B then

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