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Anion test Sample Test with red litmus paper - Coggle Diagram
Anion test
Sample
Test with red litmus paper
Turns blue
Add dilute HNO3
Because nitric acid will react with carbonate
All nitrates are soluble
Bubbles CO3 2-
(adding nitric acid prodcues carbon disoxide to prodcue bubbles
HNO3 + H20 --> NO3 + H20 + CO2
<--
No bubbles
Add Cu(NO3)2
Blue precipitate OH-
No precipitate CH3COO -
Turns red
Add AgNO3 +dilute HNO3
No precipitate
Fresh sample
Add dilute HNO3 + Ba(NO3)2
No precipitate
Fresh sample
Add NH3 + Ba(NO3)2
Precipitate PO4 3-
white Precipitate SO4 2-
Precipitate
Add dilute NH3
Add concentrated NH3
No change I-
precipitate dissolves Br-
Precipitate dissolves Ag+