1) Al2O3 + 3H2O = 2Al(OH)3
2) Al(OH)3 +3Na = 3NaOH + Al
3) 2Al + 3H2S = 3H2↑ + Al2S3
4) Al2S3 + 6KOH = 3K2S + 2Al(OH)3
1) Al2O3 + 3H2O = 2Al(OH)3
2) Al(OH)3 +3Na = 3NaOH + Al
3) 2Al + 3H2S = 3H2↑ + Al2S3
4) Al2S3 + 6KOH = 3K2S + 2Al(OH)3