﻿ Calculation of Vapor pressure by Clausius-Clapeyron Equation

# Calculation of Vapor pressure by Clausius-Clapeyron Equation

 1 Temperature：T K 0℃=273.15K 2 Latent heat：L kJ/mol Ex. 40.66kJ/mol(Water,Tb=373.15K,101.325kPa) 3 Vapor pressure：P0 kPa at K 0℃=273.15K 4 Gas constant：R J/K/mol - 5 Graph x-axis：T,y-axis：P Plot Input Data： YesNo 6 Number of gridlines of Graph x-axis, y-axis -
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## Keyword

Vapor pressure,Clausius-Clapeyron Equation,Temperature,Latent heat,Boiling point,Gas constant

## Reference

[1]：Graham Woan著・堤正義訳：『ケンブリッジ物理公式ハンドブック』,共立出版,p.107,2007.
[2]：Website of Chemical Physics Laboratory：Liquid-Vapor equilibrium
[3]：wikipedia：Clausius–Clapeyron relation

## Remarks

・Postulate 1：Volume of saturated vapor has a much higher value than one of liquid.Therefore volume of liquid can be ignored.
・Postulate 2：Vapor will be considered as ideal gas.
・Postulate 3：Latent heat will stay constant with temperature.
・Temperature(K)：T
・Latent heat：L
・Vapor pressure(kPa)：P0(at T0(K))
・Gas constant：R
・Making Equation Image is powered by CODECOGS

## History

・2010/12/05：Correct mistakes in sentences.