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Chemistry

Tests for Anions (Section 4)

QuestionAnswer
How do we test for carbonates? Add dilute hydrochloric acid
How do we test for sulfates? Add dilute hydrochloric acid, followed by barium chloride solution
How do we test for halides? Add dilute nitric acid followed by silver nitrate solution
What happens in a positive carbonates test? Carbon dioxide will be released
What happens in a positive sulfates test? White precipitate of barium sulfate forms
What happens in a positive test for chloride? A white precipitate of silver chloride forms
What happens in a positive test for bromide? A cream precipitate of silver bromide forms
What happens in a positive test for iodide? A yellow precipitate of silver iodide forms
Why is HCL added before testing for sulfates or halides? To get rid of carbonate or sulfite ions, which would produce their own precipitate
Created by: JoeMather
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