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Pb(NO3)2 CdSO4
2 2HCl FeS FeCl H S  
dd HCl
FeS
0
2 2 2 2
3
2
t
H S O SO H O  
0
2 2 2
1
2
t
H S O S H O  
Dung dịch
Brom
2 2 2 2 44 4 8H S Br H O H SO HBr   
2 3 2 3( ) 2H S Pb NO HNO PbS  
2 4 2 4H S CdSO H SO CdS  

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đIều chế h2 s

  • 1. Pb(NO3)2 CdSO4 2 2HCl FeS FeCl H S   dd HCl FeS 0 2 2 2 2 3 2 t H S O SO H O   0 2 2 2 1 2 t H S O S H O   Dung dịch Brom 2 2 2 2 44 4 8H S Br H O H SO HBr    2 3 2 3( ) 2H S Pb NO HNO PbS   2 4 2 4H S CdSO H SO CdS  