2Hg + H2SO4 -> HgSO4 + H2O + SO2HgSO4 + 2NaOH -> Hg(OH)2 + Na2SO4Hg(OH)2 -> HgO + H2OHgO -> Hg + 1/2O2
2Hg + H2SO4 -> HgSO4 + H2O + SO2
HgSO4 + 2NaOH -> Hg(OH)2 + Na2SO4
Hg(OH)2 -> HgO + H2O
HgO -> Hg + 1/2O2