{"id":17315,"date":"2018-03-25T13:13:19","date_gmt":"2018-03-25T13:13:19","guid":{"rendered":"http:\/\/sitepourvtc.com\/?page_id=17315"},"modified":"2022-11-10T12:50:10","modified_gmt":"2022-11-10T12:50:10","slug":"mayers-relation-mayers-formula","status":"publish","type":"page","link":"https:\/\/sitepourvtc.com\/nuclear-engineering\/thermodynamics\/ideal-gas-law\/mayers-relation-mayers-formula\/","title":{"rendered":"Mayer’s relation – Mayer’s formula"},"content":{"rendered":"
According to Mayer’s relation<\/strong> or Mayer’s formula,<\/strong> the difference between these two heat capacities is equal to the universal gas constant. Thus the molar specific heat at constant pressure is equal:<\/p>\n Cp<\/sub> = Cv<\/sub> + R<\/span><\/strong><\/p>\n<\/div><\/div>\n Julius Robert Mayer, a German chemist, and physicist derived a relation between specific heat at constant<\/strong> pressure and the specific heat at constant volume<\/strong> for an ideal gas. He studied the fact that the specific heat capacity at constant pressure (Cp<\/sub>) is slightly greater than at constant volume (Cv<\/sub>). He reasoned that this C<\/em><\/strong>p<\/sub><\/em><\/strong> is greater than the molar specific heat at constant volume C<\/em><\/strong>v<\/sub><\/em><\/strong>\u00a0because energy must now be supplied not only<\/strong> to raise the temperature<\/strong> of the gas but also for the gas to do work<\/strong>. In this case, volume changes.<\/p>\n