Question

give two confirmatory tests for each NH3 , H2S , C12​

Answer 1

Answer:

For NH3 Ammonium ions can be identified in a solution by adding dilute sodium hydroxide solution and gently heating. If ammonium ions are present, they will be converted to ammonia gas. Ammonia has a characteristic choking smell. It also turns damp red litmus paper or damp universal indicator paper blue.For H2S Confirmatory tests should be performed on separate solutions of some of ... Even if hydrogen sulfide was not used for separation of ions, it may be useful for confirmatory tests. The most convenient and safe source of H2S is thioacetamide. ... stirring well after each drop, until a permanent precipitate forms.For C12 correlation test and Receiver-operating characteristic (ROC) curves were used for the analysis. ... All the patients had biopsy confirmation ... The positive rate of each TM in the C12 system is listed in.

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