Assertion : The difference between $\Delta H$ and $\Delta U$ is not significant for systems consisti

Question

Assertion : The difference between $\Delta H$ and $\Delta U$ is not significant for systems consisting of only solids and/or liquids.\ Reason : Solids and liquids do not suffer any significant volume changes upon heating.\

Professor PC Thomas Classes · Answer

(a) : Solids and liquids do not show significant change in the volume when heated. Thus, $\Delta V$ is insignificant.
$
\Delta H=\Delta U+P \Delta V=\Delta U+P 	imes 0 	ext { or } \Delta H=\Delta U
$