(a)[3]
Describe how pure, dry crystals of hydrated copper(II) sulfate can be obtained from the reaction mixture.
(b)[3]
The student used 15.0 cm$^3$ of 2.00 mol/dm$^3$ sulfuric acid to prepare the crystals. Calculate the largest possible mass of hydrated copper(II) sulfate crystals that could be formed.
(c)[2]
Aqueous ammonia is introduced to aqueous copper(II) sulfate until the ammonia is in excess. What is observed as the aqueous ammonia is added?
(d)[2]
An aqueous solution of copper(II) sulfate is electrolysed with inert electrodes. Predict the products at the anode (positive electrode) and the cathode (negative electrode) for this electrolysis.