4Mg + 5H2SO4 = H2S + 4MgSO4 +4H2O
2H2S + SO2 = 3S + 2H2O
2Al +3 S = Al2S3
Al2S3 + 6H2O = 2Al(OH)3 + 3H2S
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2H2S + SO2 -> 3S + 2H2O
3S + 2Al t -> Al2S3
Al2S3 + 6HOH -> 2Al(OH)3↓ + 3H2S↑
4Mg + 5H2SO4 = H2S + 4MgSO4 +4H2O
2H2S + SO2 = 3S + 2H2O
2Al +3 S = Al2S3
Al2S3 + 6H2O = 2Al(OH)3 + 3H2S