Aqueous Ions Flashcards
What is the aqueous ion for Iron(II)?
State the colour of the solution.
[Fe(H2O)6]²⁺(aq)
green solution
What is the aqueous ion for Copper(II)?
State the colour of the solution
[Cu(H2O)6]²⁺(aq)
blue solution
What is the aqueous ion for Iron(III)?
State the colour
[Fe(H2O)6]³⁺(aq)
yellow-brown solution
What is the aqueous ion for Aluminium(III)?
State the colour
[Al(H2O)6]³⁺(aq)
colourless solution
What happens when NaOH is added dropwise to Iron(II) solution?
Fe(H2O)4(OH)2 ppt
green ppt goes brown on standing in air
What happens when NaOH is added dropwise to Copper(II) Solution
Cu(H2O)4(OH)2 ppt
pale blue ppt
What happens when NaOH is added dropwise to Iron(III)?
Fe(H2O)3(OH)3
brown ppt (ppt may look orange-brown)
What happens when NaOH is added dropwise to Aluminium(III)?
Al(H2O)3(OH)3
white ppt
What happens when excess NaOH is added to Iron(II)?
No further change
What happens when excess NaOH is added to Copper(II)?
No further change
What happens when excess NaOH is added to Iron(III)?
No further change
What happens when excess NaOH is added to Aluminium(III)?
[Al(OH)4]–(aq)
colourless solution
What happens when NH3 is added dropwise to Iron(II)?
Fe(H2O)4(OH)2(s)
green ppt goes
brown on standing
in air
What happens when NH3 is added dropwise to Copper(II)?
Cu(H2O)4(OH)2(s)
blue ppt
What happens when NH3 is added dropwise to Iron(III)?
Fe(H2O)3(OH)3(s)
brown ppt
(ppt may look
orange-brown)
What happens when NH3 is added dropwise to Aluminium(III)?
Al(H2O)3(OH)3(s)
white ppt
What happens when excess NH3 is added to Copper(II)?
[Cu(H2O)2(NH3)4]2+(aq)
deep blue solution
What happens when Na2CO3 is added to Iron(II)?
FeCO3(s)
green ppt
What happens when Na2CO3 is added to Copper(II)?
CuCO3(s)
blue-green ppt
What happens when Na2CO3 is added to Iron(III)?
Fe(H2O)3(OH)3(s)
brown ppt
(ppt may look
orange-brown)
and CO2 gas
evolved
What happens when Na2CO3 is added to Aluminium(III)?
Al(H2O)3(OH)3(s)
white ppt
and CO2 gas
evolved
