Which of the following tests can you identify K+ in a salt? | Qualitative and Quantitative Analysis — Chem-Mantra | Chem-Mantra

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Qualitative and Quantitative AnalysiseasyMCQ SINGLE

Question

Which of the following tests can you identify K+ in a salt?

Answer: A

💡 Solution & Explanation

K+ imparts a violet/lilac color to the flame and reacts with sodium cobaltinitrite to form a yellow precipitate of potassium cobaltinitrite, K3[Co(NO2)6].

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