For which process is the sign of △S negative?


2 H2(g) + O2(g) → 2 H2O(g)


2 H2O(l) + 2 K(s) → 2 K+(aq) +2 OH−(aq) + H2(g)


H2O(s) → H2O(g)


H2O(l) → H2O(g)