Question

 
Scrieti ecuatia reactilor pentru urmatoarele transformari.

Al2O3->Al->AlCl3->Al(OH)3->AlCl3
                |                     |
                \/                   \/
         Al2O3                NaAlO2

Answer 1

Al2O3 + 3 H2 = 2 Al + 3 H2O
2 Al + 3/2 O2 = Al2O3
Al + 3/2 Cl2 = AlCl3
AlCl3 + 3 NaOH = Al(OH)3 + 3 NaCl
Al(OH)3 + NaOH = NaAlO2 + 2 H2O