Which of the following are not state functions? (I) $q+w$ (II) $q$ (III) $\mathrm{w}$ (IV) H-TS
Which of the following are not state functions?
(I) $q+w$
(II) $q$
(III) $\mathrm{w}$
(IV) H-TS
(II) and (III)
(I) and (IV)
(II), (III) and (IV)
(I), (II) and (III)
Solution
$\begin{gathered}
\Delta U=q+w \\
\Delta G=\Delta H-T \Delta S
\end{gathered}$
$\Delta \mathrm{U}$ and $\Delta \mathrm{G}$ are state functions but $\mathrm{q}$ and w are not state functions.