Chapter 8, Problem 8.28NP

Interpretation Introduction

Interpretation:

The enthalpy of vaporization of SO₂(l) needs to be deduced graphically from the given temperature and pressure data.

Concept Introduction:

Vaporization is a phase transition reaction which involves a change in the state of a substance from the liquid to the vapor phase

Enthalpy of sublimation (ΔH_vap) is the amount of heat energy required for the phase conversion

The relationship between pressure (P), temperature (T) and the enthalpy change (ΔH) is given via the Clausius-Clapeyron equation:

  $\text{lnP = }\frac{-\text{ΔH}}{\text{R}}\left(\frac{\text{1}}{\text{T}}\right)\text{ + C -----(1)}$

Where R = 8.314 J/mol-K and C is a constant