basic question help (1 Viewer)

[Timothy.Siu]

i was just doing a question,
"The reactions of oxides with water is hydrolysis. Write conventional equations for the hydrolysis of these:"

i got stuck on one of them...
it was d)phosphuros pentoxide,

and i got P₂0₅ + H2O ---> 2HPO₃
but the answers had sometyihng else

 

[Trebla]

Well first of all, PO₄ or PO₃ has a valency of -3, so the acid should be triprotic.

I'm not completely sure, but I think it's:
P₂O_{5 (s)} + 3H₂O _(l) --> 2H₃PO_{4 (aq.)}

 

[Timothy.Siu]

Well first of all, PO₄ or PO₃ has a valency of -3, so the acid should be triprotic.

I'm not completely sure, but I think it's:
P₂O_{5 (s)} + 3H₂O _(l) --> 2H₃PO_{4 (aq.)}

yeah okay thanks, lol,