Question

For which of the following cases, $\Delta S=\frac{\Delta H}{T}?$

• A. Process of which $\Delta C_P=0$, but $\Delta C_V=0$
  
• B. An isothermal process
• C. An isobaric process
• D. An isothermal reversible phase transition process

Answer 1

The correct option is D An isothermal reversible phase transition process

As we know,
$\Delta S=\frac{q}{T}$

and for isothermal reversible phase transition process,

$\Delta S=\frac{\Delta H}{T}$ as $q=\Delta H$