Unlike liquid there is no coefficient of apparent expansion in case of a gas-why? On,during the expansion of a liquid ,volume expansion of the container is taken into account,but not for a gas-Why?

Unlike liquid there is no coefficient of apparent expansion in case of

1.	Unlike liquid there is no coefficient of apparent expansion in case of a gas-why? On,during the expansion of a liquid ,volume expansion of the container is taken into account,but not for a gas-Why?
Answer» Solution :When a liquid in a container is HEATED,both the liquid and the container expand. The coefficient of expansion of any solid is less than that of any liquid but not negligible. SO the expansion of the solid is not neglected. Thus in CASE of LIQUIDS we GET TWO coefficients of expansion.One is the coefficient of apparent expansion and the other is the coefficient of real expansion. In apparent expansion the expansion of the container is ignored.Whereas in real expansion the coefficient of expansion .A mass of gas is also heated of a liquid. But for the same rise in temperature. the expansion of a gas is nearly 100 times more than that of the container. Unless a very accurate measurement is required expansion of the container is neglected. Hence, no apparent expansion needs to be considered in case ofa gas.