Physical Chemistry
Physical Chemistry
3rd Edition
ISBN: 9780321812001
Author: ENGEL, Thomas/ Reid
Publisher: Pearson College Div
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Chapter 8, Problem 8.1NP
Interpretation Introduction

Interpretation:

The enthalpy of vaporization of tetrachloromethane 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 ( ΔHvap) 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:

  lnP = ΔHR(1T) + C -----(1)

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

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