з)2Mg+O2=>2MgO
МgO+H2CO3=>MgCO3+H2O
MgCO3=>MgO+CO2
CO2+CaO=>CaCO3
CaCO3=>CaO+CO2
и)4Al+3O2=>2Al2O3
Al2O3+2NaOH=>2NaAlO2+H2O
NaAlO2+4HCl=>NaCl+AlCl3+2H2O
AlCl3+3NaOH=>Al(OH)3+3NaCl
Al(OH)3+NaOH=>Na[Al(OH)4]
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Answers & Comments
з)2Mg+O2=>2MgO
МgO+H2CO3=>MgCO3+H2O
MgCO3=>MgO+CO2
CO2+CaO=>CaCO3
CaCO3=>CaO+CO2
и)4Al+3O2=>2Al2O3
Al2O3+2NaOH=>2NaAlO2+H2O
NaAlO2+4HCl=>NaCl+AlCl3+2H2O
AlCl3+3NaOH=>Al(OH)3+3NaCl
Al(OH)3+NaOH=>Na[Al(OH)4]