Aq Anions

Question 1

*Carbonate (CO32-)

Answer 1

Test= add (any) dilute acid

Result= effervescence (bubbling)= CO2 produced

Question 2

•Chloride (Cl-)

Answer 2

Test= Acidify with diluted nitric acid and add Aq Silver Nitrate

Result= White ppt

Question 3

•Bromide (Br-)

Answer 3

Test= Acidify with diluted nitric acid and add Aq Silver Nitrate

Result= Cream Ppt

Question 4

•Iodide (I-)

Answer 4

Test= Acidify with Diluted Nitric Acid and add Aq Silver Nitrate

Result= Yellow ppt

Question 5

Nitrate (NO3-)

Answer 5

Test= Add Aq NaOH and add aluminium foil; warm carefully

Result= Ammonia Gas is Produced

Question 6

Sulfate (SO42-)

Answer 6

Test= Add any acid and add Aq Barium Nitrate

Result= White ppt.

Question 7

PATTERNS

Answer 7

•all halides (SAME TEST):
Cl- } precipitates
Br- } get more yellow
I- } as you go down

*Always acidify FIRST to rule out Carbonate