MnO4(-) SCN(-) H(+) . Mn(2+) SO4(2-) HCN (CN)2 HOCN H2O . Reaction of thiocyanate and permanganate in acidic media, now with side reactions, where cyanogen and cyanic acid are formed. For this reaction no uniquely determined reaction equation can be determined. This results in a three-dimension solution space and now a linear combination of three base solutions can be used as solution for this reaction.