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Encyclopedia > Vapor Pressure of Water at Various Temperatures

Vapor pressure of water can be used in many experiments, particularly experiments relating to gases. A common classroom experiment in which the vapor pressure at various temperatures table is used is when trying to find the molar mass of butane. The experiment is done by releasing butane gas from a cigarette lighter underwater into glass tubing. By calculating the partial pressure of the gas and subtracting the atmospheric pressure on the day that the experiment was conducted, it is possible to obtain an accurate result. This can be done with other gases with the same process.

Contents


Vapor pressure of water at various temperatures

Temperature (°C) Pressure (kPa)
0 0.61
1 0.66
2 0.71
3 0.76
4 0.81
5 0.87
6 0.93
7 1.00
8 1.07
9 1.15
10 1.23
11 1.31
12 1.40
13 1.50
14 1.60
15 1.70
16 1.82
17 1.94
18 2.06
19 2.20
20 2.34
21 2.49
22 2.64
23 2.81
24 2.98
25 3.17
26 3.36
27 3.56
28 3.78
29 4.00
30 4.24
31 4.49
32 4.75
33 5.03
34 5.32
35 5.62
36 5.94
37 6.27
38 6.62
39 6.99
40 7.37

See also

In chemistry and physics, Vapor pressure is the pressure of a vapor in equilibrium with its non-vapor phases. ... Water vapor or water vapour, also aqueous vapour, is the gas phase of water. ... The gas laws are a set of laws that describe the relationship between thermodynamic temperature (T), pressure (P) and volume (V) of gases. ... Molar mass is the mass of one mole of a chemical element or chemical compound. ...

External links

  • Vapor Pressure of Water at More Temperatures
  • Experiment showing the effect of vapor pressure
  • Equations approximating vapour pressure of water

References

  • Garnett, Pat; Anderton, John D; Garnett, Pamela J (1997) Chemistry Laboratory Manual For Senior Secondary School. Longman. ISBN 0-7339-0166-2.

 
 

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