常用方程式3S ＋6OH- ==Δ== 2S 2- ＋SO₃2- ＋ 3H₂OS2- ＋H₂O ==== HS- ＋OH-水解反应3S2- ＋ 2Al3+ ＋ 6H₂O ==== 2Al(OH)₃↓ ＋3H₂S↑S2- ＋ 2Fe3+ ==== 2Fe2+ ＋ S↓SO₂...