A Student Knew That It Was Possible To Make Copper(II)sulphate crystals by adding copper(II) carbonate to dilute sulphuric acid and warming the resulting solution to drive off some of the water and then leaving the solution tocrystallize.Hedecidedtomakecopper(II)nitrate crystals by similar method. The only changehemadewastousedilutenitricacid.Heleüthefinal solutionforseveraldaysbutfailedtocollectanycrystals.Explainwhythestudentdidnotget any crystals to collect.