I don't know if that's the same thing my teacher meant. How do you use that method to identify unknown substances (aq) though?
The example she gave us is:
suppose
NaBr (s) --> Na+ (aq) + Br- (aq)
AgNO3 (s) --> Ag+ (aq) + NO6- (aq)
If the solutions are mixed,
Na+ (aq) + Br- (aq) + Ar+ (aq) + NO3- (aq) --> AgBr (s)
AgBr (s) is the precipitate, so what is in the mixture will be:
AgBr (s) + Na+ (aq) + NO3-(aq)
So now for the experiment we are given reagents KOH and H2SO4 to identify unknown substances. How do you apply her example in this case?