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svetka1574

Ответ:

Объяснение:

2Al +3Cl2 -> 2AlCl3

AlCl3 + 3NaOH = Al(OH)3 + 3NaCl

2Al + 2NaOH + 6H2O = 2Na[Al(OH)4] + 3H2

Al(OH)3 + NaOH = Na[Al(OH)4]

Al2O3 + 2NaOH +3H2O= 2Na[Al(OH)4]

2Al(OH)3 -> Al2O3 + 3H2O

2) Ca + H2 = CaH2

CaH2 + 2H2O = Ca(OH)2 + 2H2

Ca + 2H2O = Ca(OH)2 + H2

Ca(OH)2 + 2CO2 = Ca(HCO3)2

Ca(OH)2 -> CaO + H2O

Ca(HCO3)2 -> CaCO3 + CO2 + H2O

CaCO3 + 2HCl = CaCl2 + CO2 + H2O

CaO + 2HNO3 = Ca(NO3)2 + H2O

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