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The pressure-temperature relation for liquid-vapour phase equilibrium of water substance

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  • Essay length: 2621 words
  • Submitted: 04/09/2009
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University Degree Engineering

The first 200 words of this essay...

DEN107 Thermodynamics - Laboratory

The pressure-temperature relation for liquid-vapour phase equilibrium of water substance

Paul James Ashley

05 003984 3

April 23rd 2006

Abstract

The objective of the experiment is to verify that the relationship between pressure and temperature is described by the Clausius-Clapeyron equation, derived in two forms in the theory. Two experiments were carried out on two sets of equipment, one for pressures below atmospheric and one for those above atmospheric. The results are presented, and graphs show that there is an almost exact linear trend for pressures above atmospheric, and an approximately linear relationship for pressures below atmospheric. Calculations with comparison to published tables show that the results from this experiment do indeed follow the trend described by the Clausius-Clapeyron, and as such the objectives were met. Where any differences exist, these are accounted for by experimental and human error, of which experimental error was estimated from the graphs at 4.6%.

Contents

Introduction page 3

Background Theory page 4

Apparatus page 6

Experimental Procedure page 7

Results page 8

Discussion page 10

Conclusions page 13

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