kK4Fe(CN)6 kK3Fe(CN)6 KSCN Fe(NH4)2 (SO4)2 Turquoise ppt Dark blue ppt Clear orange FeCl3 Dark Green ppt Dark Red ppt Fe(NH4)2 (SO4)2 INITIAL OBS: CLEAR AND COLORLESS FeCl3: INITIAL OBS: CLEAR AND YELLOW K4Fe(CN)6: INITIAL OBS: CLEAR AND YELLOW K3Fe(CN)6: INITIAL OBS: CLEAR AND YELLOW KSCN : INITIAL OBS: CLEAR AND COLORLESS

Practice: Name the following compounds Fe +x Cl-1 Cl-1 Cl-1 +3 FeCl3 x + 3(-1) = 0; x = +3 iron(III) chloride

How many ions are present in Fe(NH4)2(SO4)2? What is the on the Fe? -2 -2 Fe +x +1 +1 +2

+2 +3 +2 +3 kK4Fe(CN)6 kK3Fe(CN)6 KSCN Fe(NH4)2 (SO4)2 Turquoise ppt Dark blue ppt Clear orange FeCl3 Dark Green ppt Dark Red ppt +2 +3 Fe(NH4)2 (SO4)2 INITIAL OBS: CLEAR AND COLORLESS FeCl3: INITIAL OBS: CLEAR AND YELLOW K4Fe(CN)6: INITIAL OBS: CLEAR AND YELLOW K3Fe(CN)6: INITIAL OBS: CLEAR AND YELLOW KSCN : INITIAL OBS: CLEAR AND COLORLESS