A learnt a definition that said "A precipitation reaction is a type of chemical reaction, in which two soluble salts in an aqueous solution combine and one of the products in an insoluble salt called a precipitate". Thought it was neat, then I was reading an article and it said this was a precipitation reaction:
2AgNO3(aq) + Cu(s) →Cu(NO3)2(aq) + 2Ag(s)
According to the above definition, we need two soluble salts, copper is not a soluble salt (right?) I mean it's solid for one thing and I learnt that a salt is an ionic compound that consists of a cation and an anion which obviously, pure copper is not.
So how exactly can you categorizes something as a precipitation reaction, thank you.siamsport