Question

During the phase change of a pure substance

• A. $dG=0$
• B. $dU=0$
• C. $dP=0$
• D. $dH=0$

Answer 1

The correct option is C $dP=0$

During phase change of a substance,
$dT=0$
$dP=0$
$dG=0$

Both options, (a) and (b) are correct.