A laboratory technician tests separate portions of a sample. A flame test gives a yellow-orange flame. When dilute nitric acid followed by silver nitrate solution is added to another portion, a yellow precipitate forms. The technician proposes using dilute hydrochloric acid instead of dilute nitric acid before adding the silver nitrate solution.
Name the compound in the sample and explain how each test result supports your answer.
Evaluate whether the technician's proposal would allow reliable identification of the halide ions in samples.
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.