The element oxygen was prepared by Joseph Priestly in 1774 b…
The element oxygen was prepared by Joseph Priestly in 1774 by heating mercury (II) oxide: 2 HgO (g) ⟶ 2 Hg (s) + O2(g) For this reaction, ΔH° = 90.84 kJ/mol and ΔS° = 108.23 J/(mol∙K). True or False. This reaction is spontaneous at 373°C.