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: Isothermal Change / Operation, A, A change, th prissur and volume of a gas without, any change in its temperatun, is called an Ysothemal, change,, gno isothermal change there is a free exchange of heat, between the, gas, dnd its., surraundings., : Essential conditions for a perfact isothermal change:-, 0 The walls of the containet must be perfectly conducting.to, allaw free, surroundings, @ The process, so as' to proviele time for the exchange of heat., Exchange of heat between the gas, t. and its, compression or expansion should beslow, Examples of isothemal change :-, 5 Metting process, 1). Boiling, Isotherm or T80thermal curve!-, The graphical epresentation between Pressure and, Volume ait 'constant 'temperature s called isstherm, or isothermal curve, Ti, Te> Te > Ti, V -, Scanned with CamScanner, Scanned with CamScanner