Physical Chemistry
Physical Chemistry
3rd Edition
ISBN: 9780321812001
Author: ENGEL, Thomas/ Reid
Publisher: Pearson College Div
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Chapter 8, Problem 8.16NP
Interpretation Introduction

Interpretation:

The enthalpy of sublimation of ice needs to be deduced graphically from the given temperature and pressure data.

Concept Introduction:

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

Enthalpy of sublimation (ΔHsub) 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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