Chapter 15, Problem 15.59P

Interpretation Introduction

Interpretation:

The relation between $\Delta H_{\text{sub}}$, $\Delta H_{\text{fus}}$ and $\Delta H_{\text{vap}}$ near to triple point has to be reported.

Concept Introduction:

Molar enthalpy for a process is magnitude of heat energy needed by one mole of a substance to undergo change in the process. Thheat energythat is absorbed by $n$ mole of substance toundergo change is as follows:

  $q=n\left(\Delta H\right)$

Here,

$q$ is heat energy in $\text{kJ}$.

$n$ is moles of substance.

$\Delta H$ is enthalpy for process in $\text{kJ/mol}$ .

The value of $\Delta H$ is positive always as energy needed to overcome the interactions between the liquid molecules.