Question

EXPLAIN:-Heat supplied toa substance during its change of state,does not cause any rise in temprature.

Answer 1

When phase change occurs the intermolecular bonding does change. This occurs because of heat (or lack of it). The heat energy can loosen bonds from the change of state from say liquid to gas while the bonds stiffen when the opposite happens. Here, the heat energy does not raise the temperature of the substance during phase change instead, it is responsible for affecting the inter molecular forces of the substance.

Thus, the temperature of the substance does not change during phase change although heat is being applied to it.