Why does free expansion process have zero work transfer?explain
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Free Expansion of a Gas. ... We know from the first law for a closed system that the change in internal energy of the gas will be equal to the heat transferred plus the amount of work the gas does, or . Since the gas expands freely (the volume change of the system is zero), we know that no work will be done, so W=0.
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Work done = zero because , free expansion is a irreversible adiabatic and isothermal process . Due to isothermal , there is no temperature change and hence no internal energy change occur. Free expansion is a process where no external pressure is applied.
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