Specific Heat of a Gas

Specific Heats of a Gas

The specific heat of a substance my be broadly defined as the amount of heat required to raise the temperature of its unit mass through 1 degree. All the liquids and solids have one specific heat only. But a gas can have any number of specific heats depending upon the conditions, under which it is heated.

  1. Specific heat at constant volume : It is the amount of heat required to raise the temperature of a unit mass of a gas throught 1 degree, when it is heat at constant volume. 
  2. Specific heat at constant pressure : It is the amount of heat required to raise the temperature of a unit mass of a gas through 1 degree, when it is heated at constant pressure.