A geologist has dissolved a mineral specimen to obtain an aqueous solution of copper(II) sulfate.
Describe how the geologist can obtain a pure, dry sample of copper(II) sulfate pentahydrate crystals from this solution.
107 exam-style questions on Edexcel GCSE Chemistry 3.2 Methods of separating and purifying substances, covering 3.2.1 Pure substances and mixtures, 3.2.2 Techniques for separating mixtures, 3.2.3 Paper chromatography and Rf values, and 3.2.4 Making water potable. Each one has a worked solution and a mark scheme showing where the marks go.