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Which reagent is used for detecting Ni^2+ ions in solution?

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in Chemistry – Class 12 by (188k points)
Which reagent is used for detecting Ni^2+ ions in solution?

(a) EDTA

(b) Dimethylglyoxime

(c) α-nitroso-β-naphthol

(d) Cupron

The question was asked in an interview for internship.

My question is based upon Coordination Compounds Importance and Applications topic in portion Coordination Compounds of Chemistry – Class 12

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Correct answer is (b) Dimethylglyoxime

The explanation: When dimethylglyoxime is added to a solution along with ammonium hydroxide, the formation of a bright red precipitate indicates the presence of Ni^2+ ions in solution. This is due to the formation of nickel dimethylglyoxime complex.

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