Объяснение:
1) CaO -> CaCl2 -> CaCO3
CaO + 2HCl = CaCl2 + H2O
CaCl2 + Na2CO3 = CaCO3 ↓+ 2NaCl
2) Mg(OH)2 -> MgO -> MgCl2 -> HCl
Mg(OH)2 -> MgO + H2O
MgO + 2HCl = MgCl2 + H2O
3MgCl2 + 2H3PO4 = Mg3(PO4)2↓ + 6HCl
Объяснение:
1) CaO -> CaCl2 -> CaCO3
CaO + 2HCl = CaCl2 + H2O
CaCl2 + Na2CO3 = CaCO3 ↓+ 2NaCl
2) Mg(OH)2 -> MgO -> MgCl2 -> HCl
Mg(OH)2 -> MgO + H2O
MgO + 2HCl = MgCl2 + H2O
3MgCl2 + 2H3PO4 = Mg3(PO4)2↓ + 6HCl