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For each bottle, state a test and the positive outcome that would reveal the substance in the bottle. Chemical equations are not needed.
Chemistry 5070 · O Level · Identification of ions and gases
Identification of ions and gases — practice question
A student has been given three bottles of different aqueous solutions together with some reagents.
Worked solution & mark scheme
This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “hydrochloric acid: magnesium ribbon produces fizzing/effervescence and the metal dissolves” …
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