What is Isothermal Process?
Any thermodynamic process is characterized by a change in the macroscopic thermodynamic variables associated with it. An isothermal process is one in which all developments occur at a constant temperature. In the language of thermodynamics, it is a process which is characterized by ΔT = 0. An isothermal process may occur because of contact with a thermal reservoir. The system exchanges heat and its state changes slowly (ΔQ ≠ 0), while maintaining a temperature equal to the temperature of the reservoir. The ideal gas law is stated as: PV = nRT, where P is pressure, V is the volume and T is the temperature of the system, while ‘n’ is the number of moles of a gas. During an isothermal process, ‘nRT’ becomes a constant and the equation of state for the gas can be written as: PV = Constant This is the Boyle’s Law in thermodynamics, which describes the variation of volume and pressure under isothermal conditions. If a graph of change in pressure and volume is generated, for constant temperat
