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`?

Explanation

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`.