Which response includes all of the following processes that are accompanied by an increase of entropy?
I) NaCl(s) ----H20---> Na+(aq) + Cl-(aq)
II) CaSO4(s) ---H20---> Ca +2(aq) + SO4 -2(aq)
III) KNO3 (s) ---H20---> K +1(aq) + NO3 -1(aq)
the answer is I and III.
Why does II decrease, just like I and III, they turn from 1 to 2 molecules?