Heat capacity of gases
Article No: P2320201
Heat is added to a gas in a glass vessel by an electric heater which is switched on briefly. The temperature increase results in a pressure increase, which is measured with a manometer. Under isobaric conditions a temperature increase results in a volume dilatation, which can be read from a gas syringe. The molar heat capacities Cv and Cp are calculated from the pressure or volume change. Benefits Determination of cp and cv For both demonstration and student experiments Suitable for many different gases Tasks Determine the molar heat capacities of air at constant volume Cv and at constant pressure Cp. Learning objectives Equation of state for ideal gases First law of thermodynamics Universal gas constant Degree of freedom Mole volumes Isobars Isotherms Isochors and adiabatic changes of state