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 ofthe
water and then leaving the solution to crystallize. He decided to make copper (II) nitrate crystals
by similar method. The only change he made was to use dilute nitric acid. He left the final
solution for several days but failed to collect any crystals. Explain why the student did not get
any crystals to collect.
(10 marks)
Examiner: ProfM. K. Abekoe
