напишите уравнение в трёх видах:
1)Ca⇒CaO⇒Ca(OH)2⇒Ca3(PO4)2
2)P⇒P2O5⇒H3PO4⇒Ca3(PO4)2
1)Ca⇒CaO⇒Ca(OH)2⇒Ca3(PO4)2
2)P⇒P2O5⇒H3PO4⇒Ca3(PO4)2
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Answers & Comments
CaO+H2O=Ca(OH)2
3Ca(OH)2+2H3PO4=Ca3(PO4)2+6H2O
3Ca(2+)+6OH(-)+6H(+)+2PO4(3-)=Ca3(PO4)2+6H2O
4P+5O2=2P2O5
P2O5+3H2O=2H3PO4
2H3PO4+3CaCl2=Ca3(PO4)2+6HCL
6H(+)+2PO4(3-)+3Ca(2+)+6Cl(-)=Ca3(PO4)2+6H(+)+6Cl(-)
3Ca(2+)+2PO4(3-)=Ca3(PO4)2