In the constant volume gas thermometer,
T (°c)=[P(T)-P(f)]×100/[P(b)-P(f)]
(P(T) means gas pressure at T°c
P(b) and P(f) for the water's boiling point and freezing point)
Is it right?
I'm sorry for bad english.
I wonder what is the differences between reversible-isothermal-expansion and irreversible-isothermal-expansion.
Is their entropy same?