16.
a. Define Latent heat of Fusion
b. Write any two conditions which are necessary for liquefying a gas.
c. What is the effect of the following factors on evaporation
i) Temperature
ii) Humidity
Answers
A. The amount of heat required to convert one unit amount of substance from the solid phase to the liquid phase — leaving the temperature of the system unaltered — is known as the latent heat of fusion. ... It is also equal to the enthalpy difference between the solid and liquid phases, ΔHSL.
A. The amount of heat required to convert one unit amount of substance from the solid phase to the liquid phase — leaving the temperature of the system unaltered — is known as the latent heat of fusion. ... It is also equal to the enthalpy difference between the solid and liquid phases, ΔHSL.
B. Low temperature and high pressure are the two main condition for the liquefaction of gases.
C. (1) The rate of evaporation is affected by the following factors: Temperature: The rate of evaporation increases with an increase in temperature.
(2) The rate of evaporation increases with an increase in surface area. Humidity: The amount of water vapour present in the air is called humidity.