The heat transfer Q, the work done W and
the change in internal energy U are all zero in the case of
A rigid vessel containing steam at left in the atmosphere which is at 25o C
1 kg of gas contained in an insulated cylinder expanding as the piston moves slowly outwards
A rigid vessel containing ammonia gas
connected through a valve to an evacuated rigid vessel, the vessel, the valve
and the connecting pipes being well
insulated and the valve being opened and after a time, condition through the
two vessels becoming uniform
1 kg of air flowing
adiabatically from the atmosphere into a previously evacuated bottle
A rigid vessel containing ammonia gas
connected through a valve to an evacuated rigid vessel, the vessel, the valve
and the connecting pipes being well
insulated and the valve being opened and after a time, condition through the
two vessels becoming uniform
Evacuated rigid vessel means work done ‘W’ will be zero.
The vessel, the valve end and the connecting pipes being well
insulated means heat transfer ‘Q’
will be zero.
From 1st law of thermodynamics,
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