Question

A gas occupies 400 cc under 760 mm of Hg. Calculate the pressure at which the gas occupies 380 cc if the temperature remains constant.

Answer 1

Explanation:

• The temperature remains constant during the change of state because the heat energy which is supplied to change the state of matter is used in breaking the intermolecular forces and other attractive forces. Hence the temperature remains constant as all the heat is used up and no external heat is released or absorbed.