Chapter 4, Problem 4B.9AE

Interpretation Introduction

Interpretation: The freezing point benzene at $1000\text{atm}$ has to be estimated.

Concept introduction: Clapeyron’s equation can be used to calculate the enthalpy of various phase transitions.  The phase transition between the liquid and solid state of a substance is calculated by the following formula.

    $\left(\frac{\Delta p}{\Delta T}\right)=\frac{\Delta H_{\text{fusion}}}{T\Delta V_{\text{fusion}}}$

Where,

• • $\left(\frac{\Delta p}{\Delta T}\right)$ is the change in pressure with respect to temperature.
• • $\Delta H_{\text{fusion}}$ is the enthalpy of fusion.
• • $T$ is the temperature.
• • $\Delta V_{\text{fusion}}$ is the change in the volume during the process of fusion.