FES + 2NAOH  FE(OH)2 + NA2S

1. - 200 CAU HOI LY THUYET VO CO TONG HOP LUYEN THI DAI HOC 2018 FILE WORD CO DAP AN
200 CAU HOI LY THUYET VO CO TONG HOP LUYEN THI DAI HOC 2018 FILE WORD CO DAP AN
1. FeS + 2NaOH  Fe(OH)

2

+ Na

2

S