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CBSE Class 9 Answered

What is Latent heat and triple point? Explain
Asked by | 29 Mar, 2008, 05:05: PM
Expert Answer

The single combination of pressure and temperature at which water, ice, and water vapour can coexist in a stable equilibrium occurs at exactly 273.16 K (0.01 °C) and a partial vapour pressure of 611.73 pascals (ca. 6.1173 millibars, 0.0060373057 atm). At that point, it is possible to change all of the substance to ice, water, or vapor by making arbitrarily small changes in pressure and temperature. Note that even if the total pressure of a system is well above 611.73 pascals (i.e. a system having a normal atmospheric pressure), if the partial pressure of the water vapour is 611.73 pascals then the system can still be brought to the triple point of water. Strictly speaking, the surfaces separating the different phases should also be perfectly flat, to avoid the effects of surface tensions.Latent Heat is already answered.

Answered by | 25 May, 2008, 07:47: AM
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