A student does three tests on a solid compound.
| Test | Result |
|---|---|
| Flame test | Blue-green flame |
| Add sodium hydroxide solution to a solution of the solid | Blue precipitate |
| Add dilute hydrochloric acid and then barium chloride solution to a solution of the solid | White precipitate |
What is the compound?
Copper(II) chloride
Copper(II) sulfate
Iron(II) sulfate
Calcium sulfate
107 exam-style questions on OCR GCSE Chemistry 4.2 Identifying the products of chemical reactions, covering 4.2.1 Tests to identify gases, 4.2.2 Tests for aqueous ions and flame tests, and 4.2.3 Instrumental methods of analysis. Each one has a worked solution and a mark scheme showing where the marks go.