CH-1640
Tests for anions
Chemistry · Secondary 4 · Easy · Tests for anions
A student tests for sulfate ions in an aqueous solution using barium nitrate solution.
Which observation shows that sulfate ions are present?
Which observation shows that sulfate ions are present?
- A colourless gas with a pungent smell is produced.
- A white precipitate forms and remains in dilute nitric acid.
- A brown gas is evolved.
- A blue precipitate forms and dissolves in excess reagent.
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