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One mole of an ideal gas is expanded iso...

One mole of an ideal gas is expanded isothermally. In this process, which of the quantity (or quantities) among w, q, `DeltaU,DeltaH` is (are) zero or `gt0 or lt0`?

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During isothermal expansion, heat is absorbed and work done by the gas. So q>0 and w<0. again internal energy and enthalpy remain the same during isothermal expansion of an ideal gas. Thus, `DeltaU=0 and DeltaH=0`. For the isothermal expansion of 1 mol of ideal gas `qgt0, w lt0, DeltaU=0,DeltaH=0`.
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Knowledge Check

  • Two mole of an ideal gas is expanded isothermally and reversibly from 1 litre to 10 litre at 300 K. The enthapy change (in kJ) for the process is

    A
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    B
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    D
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