Defination
Cations are metal ions
They can be identified by adding
2 reagents
Calcium Hydroxide, Ca(OH)2
Aqueous Ammonia. , NH3
O level syllubus
when ions react with sodium hydroxide/aqueous ammonia
coloured compounds or white compounds are formed
Coloured coumpounds :
Copper (2) ions
Iron (2) ions
Iron (3) ions
white ppt compounds
calcium ions
lead ions
aluminium ions
zinc ions
Colourless coumpounds
ammonium ions
All win method !!!!!
Ions. Add Sodium hyroxide/Aqueous Ammonia
Copper. Blue ppt(copper hydroxide is formed)why blue ?Cu(u is part of blue)
Iron(2). Green ppt (iron hydroxide is formed)why green ? Green (ee) is charge 2
iron(3). Red ppt (iron hydroxide is formed) why red ? ( red is 3 letters charge 3 )
white is a human nature = LAZy Cow
L= lead
A= aluminium
Z= zinc
C= calicum
how do u all win ?
