(1)Â Â What do you assume theentropy S for a perfect crystal when T = 0?
(2)Â Â Is the S(0) still zeroif the crystal is not perfect? Why?
(3)Â Â How to calculate dSwhen under the constant pressure and cp is given?
(4)Â Â How to calculate theentropy of H2O at 500 K?
(5)Â Â How to calculate theentropy change for a chemical reaction if you can find the S foreach chemical?
(6)  For anisolated thermodynamic system, dS ³ 0. That is, dS= 0 for a reversible process and dS > 0 for an irreversibleprocess (spontaneous process).
