Joule-Thomson expansion is:

$q$ and $w$ are both ....... functions and $q + w$ is a ....... function.

The relation between $\Delta H$ and $\Delta U$ for the reaction $2 SO_{3(g)} \longrightarrow 2 SO_{2(g)} + O_{2(g)}$ is:

Identify the reaction for which $\Delta H \neq \Delta E$ :

The correct option for free expansion of an ideal gas under adiabatic condition is

$\Delta_{vap} H^{\ominus}$ for water is $+40.49 \ kJ \ mol^{-1}$ at $1 \ bar$ and $100^{\circ} C$. The change in internal energy for this vaporization under the same conditions is . . . . . . . . . . $kJ \ mol^{-1}$. (Given $R = 8.3 \ J \ K^{-1} \ mol^{-1}$)