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 to memorise all these equations and colour changes for the HSC because we don't know which one they'll throw at us?? I'm confused.
	
		
			
		
		
	
								Am I meant to memorise all these equations and colour changes for the HSC because we don't know which one they'll throw at us?? I'm confused.
				