usually, entropy change in solid and liquid is formulated as Cp(or Cv)ln(T2/T1) or Q/T(integral)+ Sgen.
so, considering the former and the latter equations, Do their entropy changes include irreversibility due to Sgen?
And next question,
reservoir has no change in temperature and volume...
um... i can't understands what that means well.. Two reservoirs in internally reversible process don't match with the isolated system in irreversible process. the former doesn't have Sgen the latter has Sgen. where is Sgen created from and how ?
Let's think about two thermal reservoirs. They are internally reversible. This means they don't have entropy generation(Sgen) right? Each reservoirs' entropy change is different; one is minus(-) and the other is plus(+). But total entropy change in the isolated system has plus value(entropy...