Advertisements
Advertisements
Question
Do all the molecules of a liquid take part in evaporation? If not, explain your answer.
Advertisements
Solution
No, all the molecules of the liquid do not take part in evaporation only those molecules near the surface of the liquid which acquire sufficient Kinetic energy (Threshold velocity) escape as they overcome attractive forces of other molecules. Then other molecules come to the surface of the liquid and acquire more K.E. and escape the surface. This continues till all the liquid evaporates.
APPEARS IN
RELATED QUESTIONS
All molecules of a liquid take part in the process of evaporation.
Temperature of a liquid rises during boiling or vaporization
Boiling is a rapid phenomenon.
Heat is ................... during boiling.
Cooling is produced in ....................
The rate of evaporation of a liquid increases when:
No heat is supplied to a liquid during evaporation. How does then the liquid change into its vapours?
What is boiling? Explain it on the basis of molecular motion?
What is the change in average kinetic energy of molecules of a liquid during boiling at its boiling point?
How is the heat energy supplied to a liquid used during boiling at a fixed temperature?
