Consider the following processes, all carried out at 25 °C and 1 atm.
I. H2O(l) → H2O(g)
II. NH4NO3(s) → NH4+(aq) + NO3−(aq)
III. 2 CO(g) + O2(g) → 2 CO2(g)
IV. 2 SO2(g) + O2(g) → 2 SO3(g)
Which ranking orders the processes from the largest positive entropy change to the largest negative entropy change?
a) II>I>IV>III
b) I>II>III>IV
c) I>III>II>IV
d) II>IV>III>I