How does #"thiosulfate ion"#, #S_2O_3^(2-)# give rise to sulfur and sulfur dioxide upon disproportionation?
This is a disproportionation reaction........
It is reduced to
And thus reduction............:
And of course we could halve this, as per Nam D.'s suggestion..
Again, if mass and charge ARE NOT BALANCED, then we CANNOT accept it as a representation of chemical reality. Looking at it again, we gots both LHS and RHS neutral, LHS and RHS,
What would you observe in this reaction? Well, probably (i) the precipitate of a fine white powder of elemental sulfur, and (ii) maybe the foul odour of
Just as a comment, I like to think of sulfurous acid as the SULFUR analogue of sulfuric acid, where ONE sulfur has replaced ONE oxygen to give