Anion Tests Flashcards
Carbonate
Test
- Add dilute acid, test for CO2
Result
- Positve: Bubbles of CO2
Chloride
Test
- Acidify with dilute nitric acid
- Then add aqeous silver nitrate
Result
- Positve: White PPT
Bromide
Test
- Acidify with dilute nitric acid
- Then add aqeous silver nitrate
Result
- Positve: Cream PPT
Iodide
Test
- Acidify with dilute nitric acid
- Then add aqeous silver nitrate
Result
- Positve: Yellow PPT
Nitrate
Test
- Add aqeous sodium hydroxide
- Then aluminium foil
- warm carefully
Result
- Positve: ammonia is produced, damp red litmus turns blue
Sulfate
SO4
Test
- Acidify with dilute nitric acid
- Add aqeous barium nitrate
Result
- Positve: White PPT
Sulfite
SO3
Test
- Add a small amount of acidified aqueous potassium maganate (VII).
Result
- Positve: Potassium Maganate will go purple to colourless.