Can magnesium sulfate remove oxygen from water under alkaline conditions?
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In the analysis of dissolved oxygen in water, manganese sulfate is reacted with sodium hydroxide to produce manganese hydroxide; this manganese hydroxide can then combine with the oxygen in water to form MnO(OH)2, thereby removing the oxygen. I would like to ask fellow aquarists whether magnesium sulfate has a similar effect. This post was last edited by chenshsi on 2009-2-12 at 17:25
No, magnesium has only one valence state in solution, which is +2.
No, magnesium sulfate is a salt of a strong acid and a weak base; it cannot form magnesium hydroxide and can only exist in the form of magnesium ions.