2020 100
1
5mL01 mol -1 KI 01 mol -1 FeCl3 56
2mLCCl4
KSCN
1 _____________ __________________
2 FeSCN3 Fe3+
Fe3+ Fe2+
FeSCN3
FeSCN3
Fe3+ [Fe CN6]4 K4[Fe CN6] Fe3+ KSCN
___________ ___________
___________ ___________
_____________________________________
2
(1) NaOH ___________
(2) FeCl36H2O
___________
A B C D
(3) Cl 2___________________
_______________________________________
3 . CO
2Na
2O
2 ( )
: