Chemical Engineering - Stoichiometry - Discussion
Discussion Forum : Stoichiometry - Section 7 (Q.No. 6)
6.
The latent heat of vaporisation
Discussion:
1 comments Page 1 of 1.
Pawan Kumar Sharma said:
2 years ago
The latent heat is the amount of heat transfer required to cause a phase change per unit mass of a substance at constant pressure and temperature.
With the increase in pressure, the boiling point of the liquid increases, and a lesser amount of energy is needed to overcome the intermolecular force thus the latent heat of steam required is decreased.
Conversely, with the decrease in pressure the boiling point of the liquid decreases thus higher energy is needed to overcome the intermolecular forces thus the latent heat of steam required is more to cause a phase change.
If we keep increasing the pressure the point will come at which the latent heat of steam becomes zero this point is called the Critical point.
With the increase in pressure, the boiling point of the liquid increases, and a lesser amount of energy is needed to overcome the intermolecular force thus the latent heat of steam required is decreased.
Conversely, with the decrease in pressure the boiling point of the liquid decreases thus higher energy is needed to overcome the intermolecular forces thus the latent heat of steam required is more to cause a phase change.
If we keep increasing the pressure the point will come at which the latent heat of steam becomes zero this point is called the Critical point.
(1)
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