Answers section
Questions 6.4.1(a)
- How can we dry carbon (II) oxide?
- If oxalic acid is used, how can carbon (IV) oxide be removed?
- Explain how you would collect dry carbon (II) oxide.
- Draw a labelled diagram for the arrangement you would use to prepare and collect a wet sample of carbon (II) oxide from carbon (IV) oxide and carbon.
- Explain what would be observed when a few drops of concentrated sulphuric acid are added to copper (II) sulphate crystals
Answers to Questions 6.4.1(a)
5. The blue crystals turn to a white powder because the acid removes water of crystallization.