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Salt analysis - Coggle Diagram
Salt analysis
Cation
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Add 2g Nh4Cl, NH4OH, pass H2S gas
Black precipitate
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To original add NH4OH, acetic acid, crystal of potassium nitrate
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Add 2-3g NH4Cl, NH4OH, (NH4)2CO3. Divide into three.
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Add ammonium oxalate and NH4OH, scratch the sides
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Add NH4Cl, ammonium phosphate and scratch the sides.
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