How would you determine whether Nitrate (NO3-) ions are present in a solution

Add Aq. Sodium hydroxide -> add aluminium foil and warm gently -> Ammonia released (turns damp red litmus paper blue)

Add Acid -> Effervescence -> Carbon dioxide released (turns lime water milky)

Add dilute Hydrochloric acid -> Add Aq. Barium nitrate -> White precipitate

Quiz

Anions test

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1Dilute Hydrochloric acid is added then aqueous Barium Nitrate, a white precipitate forms. Which anion is present?
1. ASulfate (SO42−)
2. BNitrate (NO3−)
3. CCarbonate (CO32-)
2How would you determine whether Nitrate (NO3-) ions are present in a solution
1. AAdd Acid -> Effervescence -> Carbon dioxide released (turns lime water milky)
2. BAdd Aq. Sodium hydroxide -> add aluminium foil and warm gently -> Ammonia released (turns damp red litmus paper blue)
3. CAdd dilute Hydrochloric acid -> Add Aq. Barium nitrate -> White precipitate
3Which of these is untrue for testing for halides in solution
1. AIodide - White ppt.
2. BChloride - Cream ppt.
3. CBromide - Yellow ppt.
4Dilute nitric acid is added to a substance and then silver nitrate, a white precipitate forms, what anion is present?
1. AIodide
2. BCarbonate
3. CSulfate
4. DBromide
5. ENitrate
6. FChloride
5To test whether a carbonate anion is present, a dilute acid is added and effervescence is observed and Oxygen released.
1. ARichtig
2. BFalsch