Question
What is Dulong and Petit’s law? Is this law applicable in all the ranges of temperature?
Solution
According to the Dulong and Petit’s law, the specific heat of all the solids is constant.
That is, 3R/M is independent of temperature.
This law is in agreement with observed heat capacity only in the higher range of temperature, because the specific heat of all the substances is found to approach zero at low temperature.
That is, 3R/M is independent of temperature.
This law is in agreement with observed heat capacity only in the higher range of temperature, because the specific heat of all the substances is found to approach zero at low temperature.
