Chemistry Forum

my problem states to balance the equation: diphosphorus trioxide reacts with aqueous potassium hydroxide to form potassium phosphate plus water. but when i looked up potassium phosphate, i found 3 possible salts: KH₂PO₄, K₂HPO₄, and K₃PO₄. So my unbalanced equation would look like P₂O₃ + KOH -> (one of the salts) + H₂O. I put each variation into the equation solver on this site and it tells me that each of these reactions is impossible. So, what is wrong?

In fact it is impossible! Because P is oxidized (P₂O₃->phosphate) and nothing is reduced!
You either had P₂O₅ and it turned to a phosphate (e.g. K₂HPO₄) or
you had P₂O₃ which turns to a phosphite that is K₂HPO₃.
Hope that explains this issue.