Question

(i) What is the principle of method of mixtures?
(ii) What is the other name given to it?
(iii) Name the law on which the principle is based.

Answer 1

$\left(i\right)$ When a hot body is mixed (or kept in contact) with a cold body, heat energy passes from the hot body to the cold body, till both the bodies attain the same temperature, if no energy is lost to the surroundings, i.e., if the system is fully insulated.

Heat lost by the hot body = Heat gained by the cold body.

(If the system is fully insulated.)

This is the principle of method of mixtures.

$\left(ii\right)$ The other name of principle of method of mixtures is principle of calorimetry.

$\left(iii\right)$ The principle of method of mixtures is based on the law of conservation of energy.