This question is about chemical analysis.
Calcium chloride is used in food preservation and road de-icing. A chemist tested a sample of a de-icing agent to show the presence of calcium ions and chloride ions.
The sample is soluble in water.
Plan a method the chemist could use to show that the sample contains calcium ions and chloride ions.
The chemist has:
You should give the results of the tests.
The chemist could also use an instrumental method to identify the metal ions in the medicine.
Which instrumental method could be used to show the presence of calcium ions in the sample?
Give one advantage of using this instrumental method instead of a chemical flame test.
29 exam-style questions on AQA GCSE Chemistry 8.3 Identification of ions by chemical and spectroscopic means, covering 8.3.1 Flame tests, 8.3.2 Metal hydroxides, 8.3.3 Carbonates, 8.3.4 Halides, 8.3.5 Sulfates, 8.3.6 Instrumental methods, and 8.3.7 Flame emission spectroscopy. Each one has a worked solution and a mark scheme showing where the marks go.