I've been doing past papers, etc. and I've noticed that each school learns a different set of reversible reactions for Mod 5 (e.g. Acetic acid & methyl orange, potassium chromate/dichromate, KSCN/SCN-, NO2/N2O4, Hydrated Copper Sulfate, Hydrated Cobalt Chloride, the list GOES ON!!)
Am I meant...