1) 2AlCl3 + 3Ca = 3CaCl2 + 2Al
Al(+3) +3e = Al(0) 2 ок-ль, в-ие
Ca(0) -2e = Ca(+2) 3 в-ль, ок-ие
3)2 Al +3 Cl2 = 2AlCl3
2AlCL3 + 3Mg =3 MgCl2 + 2Al
2Al +3 S = Al2S3
Al2S3 + 6NaOH= 2Al(OH)3 + 3Na2S
2Al(OH)3 = Al2O3 + 3H2O
2Al2O3 =4 Al +3 O2
4-1) 2Al + 6H2O = 2Al(OH)3
Al(OH)3 + 3HCl = AlCl3 + 3H2O
AlCl3 + 3NaOH = Al(OH)3 + 3NaCl
Al(OH)3+ NaOH = Na [Al(OH)4]
2) 4Al + 3O2 = 2Al2O3
Al2O3 +2NaOH + 3H2O = 2Na[Al(OH)4]
Na[Al(OH)4] + HCl = Al(OH)3 + NaCl + H2O
2Al(OH)3 = Al2O3 +3 H2O
1) 2AlCl3 + 3Ca = 3CaCl2 + 2Al
Al(+3) +3e = Al(0) 2 ок-ль, в-ие
Ca(0) -2e = Ca(+2) 3 в-ль, ок-ие
3)2 Al +3 Cl2 = 2AlCl3
2AlCL3 + 3Mg =3 MgCl2 + 2Al
2Al +3 S = Al2S3
Al2S3 + 6NaOH= 2Al(OH)3 + 3Na2S
2Al(OH)3 = Al2O3 + 3H2O
2Al2O3 =4 Al +3 O2
4-1) 2Al + 6H2O = 2Al(OH)3
Al(OH)3 + 3HCl = AlCl3 + 3H2O
AlCl3 + 3NaOH = Al(OH)3 + 3NaCl
Al(OH)3+ NaOH = Na [Al(OH)4]
2) 4Al + 3O2 = 2Al2O3
Al2O3 +2NaOH + 3H2O = 2Na[Al(OH)4]
Na[Al(OH)4] + HCl = Al(OH)3 + NaCl + H2O
2Al(OH)3 = Al2O3 +3 H2O
2Al2O3 =4 Al +3 O2