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How to Read the Vapor Pressure Table
How to read Table H: Vapor Pressure of Four Liquids
Reffy: Table H (p. 4)
To find the boiling point at STP:
1. Find the intersection of the liquid and the normal atmospheric pressure (the dotted line).
Find the intersection of propane and the dotted line.
2. Trace that point down to find the temperature of the boiling point. a. Each horizontal line (−) represents 10 kPa (vapor pressure)
b. Each vertical line ( l ) represents 5°C
In our example above, the boiling point would be 55°C.
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183 © UNIT 5: MATTER
