1)P2O5+3H2O=2H3PO4
2)H3PO4+3KOH=K3PO4+3H2O
3)2K3PO4+3CaCl2=6KCl+Ca3(PO4)2
6K+2PO4+3Ca+6Cl=6K+6Cl+Ca3(PO4)2
2PO4+3Ca=Ca3(PO4)2
1)P2O5+3H2O=2H3PO4
2)H3PO4+3KOH=K3PO4+3H2O
3)2K3PO4+3CaCl2=6KCl+Ca3(PO4)2
6K+2PO4+3Ca+6Cl=6K+6Cl+Ca3(PO4)2
2PO4+3Ca=Ca3(PO4)2