Qualitative tests- tests for anions

Question 1

test: add dilute acid. test result: effervescence, carbon dioxide produced.

Answer 1

carbonate (CO32–)

Question 2

test: acidify with dilute nitric acid, then add aqueous silver nitrate. test result: white ppt.

Answer 2

chloride (Cl–) [in solution]

Question 3

test: acidify with dilute nitric acid, then add aqueous silver nitrate. test result: cream ppt.

Answer 3

bromide (Br–) [in solution]

Question 4

test: add aqueous sodium hydroxide then aluminium foil; warm carefully. test result: ammonia produced.

Answer 4

nitrate (NO3–) [in solution]

Question 5

test: acidify, then add aqueous barium nitrate. test result: white ppt.

Answer 5

sulfate (SO42–) [in solution]