(a)[1]
The student makes aqueous copper(II) sulfate by reacting excess copper(II) oxide with a dilute acid. Name the acid.
(b(i))[1]
Name the apparatus labelled X.
(b(ii))[1]
Describe how the student decides when to stop heating the aqueous copper(II) sulfate.
(b(iii))[2]
Suggest why apparatus X is heated in a water bath rather than being heated directly with the Bunsen burner.
(b(iv))[1]
Describe the last step needed to obtain pure hydrated copper(II) sulfate crystals.