1. Reactions in your internal that do not follow the rules.
When you react silver ions (Ag+) with sodium hydroxide (NaOH) a brown precipitate of silver oxide is formed instead of the expected silver hydroxide. Ag+(aq) + OH-(aq) --> Ag2O(s).
2.Other odd bits:
When you are identifying chloride ions in a solution of copper chloride CuCl2. The addition of silver nitrate to identify the Cl- ions forms a white ppt of silver chloride. Ag+(aq) + Cl-(aq) --> AgCl(s)
When ammonia is added to this white ppt of silver chloride the ppt will disappear, BUT The addition of ammonia will also result in the formation of the following ppt: Cu2+ + OH- --> Cu(OH)2 (light blue ppt)
So the ppt of silver chloride disappears and the silver complex ion [Ag(NH3)2]+(aq) is formed. But a light blue ppt of Cu(OH)2(s) remains.
You will observe a white ppt turning from white AgCl to light blueCu(OH)2.
3. Left out bits from your notes: When your add potassium thiocynate to iron (III) ions, a complex ion is formed that is blood red in colour. Fe3+(aq) + SCN-(aq) --> [Fe(SCN)]2+ (aq).
4. A confirming test for I-(aq) ions If you are unsure if you have Cl- or I- ions, then you can check by adding lead ions (Pb2+) If you have I- ions then you will get a bright yellow ppt of PbI2(S)