Why do gases have two specific heats of CP and CV while solids and liquids have only one?

Why do gases have two specific heats of CP and CV while solids and liquids have only one?

Cp & Cv. Gases have two specific heats because one of them refers to a change in internal energy in a system at a fixed volume. the reason gasses have two specific heats because they are not stable, they change more than liquids and solids. therefore when working with gasses we have to use the (Cp) and (Cv).

How is heat capacity related to temperature?

Heat capacity is the ratio of the amount of heat energy transferred to an object to the resulting increase in its temperature. Specific heat capacity is a measure of the amount of heat necessary to raise the temperature of one gram of a pure substance by one degree K.

Can specific heat of a gas be zero or infinity?

Yes, the specific heat of gas will be infinity. In an isothermal process, the specific heat of the gas is infinity. The whole of the heat supplied is used to do work on gas. Increase in the temperature of gas is zero, for an isothermal process.