Work done during the process when $1 \, mol$ of gas is allowed to expand freely into vacuum is:-

On what factors does the enthalpy of dilution of a solution depend?

$1 \ mol$ of an ideal gas is allowed to expand isothermally and reversibly from $1 \ L$ to $5 \ L$ at $300 \ K$. The change in enthalpy (in $kJ$) is $(R = 8.3 \ J \ K^{-1} \ mol^{-1})$.

Explain pressure-volume work.

Explain the difference between the system and surroundings.

Which one of the following is not a state function?