(main)[5]
Describe how you would separate and collect a pure, dry sample of carbon from a mixture of powdered copper(II) oxide and powdered carbon. Include the practical steps and the observations seen at each point in the process.
Chemistry 5070 · O Level · Separation and purification
Separation and purification — practice question
Copper(II) oxide and carbon are both black solids, but when Copper(II) oxide is treated with dilute sulfuric acid it forms aqueous copper(II) sulfate, whereas carbon shows no reaction with dilute sulfuric acid.