Cl2O7+H2O--->2HClO4
3CaO+P2O5--->Ca3(PO4)2
NaH+H2O--->NaOH+H2
CaH2+2H2O--->Ca(OH)2+2H2
3Na2O+P2O5--->2Na3PO4
Cl2O7+H2O--->2HClO4
3CaO+P2O5--->Ca3(PO4)2
NaH+H2O--->NaOH+H2
CaH2+2H2O--->Ca(OH)2+2H2
3Na2O+P2O5--->2Na3PO4