My group has to design a lab based on the materials and purpose our teacher gave us. The purpose is to identify some unknown substances. One of the tests that we will conduct is the KOH (aq) and H2SO4 (aq) reagents tests. The teacher gave us the following example: 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) I have no idea how to apply that example to identify substances, and am still a bit unclear on how reagents work. Can someone give me a hand? Thanks in advance!