A student wants to make pure, dry crystals of copper sulfate from copper oxide (an insoluble black powder) and dilute sulfuric acid.
Plan a method the student could use.
In your answer, explain the reason for each step.
[6 marks]Edexcel GCSE Combined Science June 2023 Chemistry Paper 1F
5 questions on this paper's topics
30:001 of 5
Some metals are added to solutions of metal sulfates.
.1
Which two mixtures react? Tick two boxes.
[2 marks].2
Explain, in terms of ions, why magnesium is more reactive than zinc.
[2 marks]Aluminium oxide is an ionic compound. It contains and ions.
.1
Write the formula of aluminium oxide.
[1 mark].2
Describe the structure of aluminium oxide.
[3 marks]A student wants to find out whether a green food colouring contains the same dyes as two known dyes, P and Q.
.1
Describe how the student could use paper chromatography to do this.
[4 marks].2
A spot moves 3.9 cm from the start line. The solvent front is 7.8 cm from the start line. Calculate the Rf value.
[2 marks]A student investigates what is produced when aqueous solutions of copper chloride and sodium chloride are electrolysed using inert electrodes.
Plan an investigation to find the products at each electrode for both solutions.
Include how you would identify any gases.
[6 marks]