Advertisements
Advertisements
Question
What is the change in average kinetic energy of molecules of a liquid during boiling at its boiling point?
Advertisements
Solution
The Average kinetic energy of liquid molecules increases during boiling. After the boiling point is reached, the temperature remains constant at this point because all of the heat (latent heat) is now being utilised for work. The average kinetic energy of the molecules increases even though the temperature remains the same.
APPEARS IN
RELATED QUESTIONS
Temperature of a liquid rises during boiling or vaporization
All molecules of a liquid take part in boiling.
Boiling occurs at ....................
Evaporation takes place at ................. .
The molecules of liquid ............. heat from surroundings in evaporation.
Heat is ................... during boiling.
In evaporation
Comment on the statement ‘evaporation is a surface phenomenon’.
Give reason for the increase in rate of evaporation of a liquid when surface area of liquid is increased.
How is the heat energy supplied to a liquid used during boiling at a fixed temperature?
