Dimethyl glyoxime gives a red precipitate with which is us…

Chemistry Co-ordinatios Compounds Application of Organometallics Single Correct MCQ

Published on: August 13, 2026

Dimethyl glyoxime gives a red precipitate with which is used for its detection. To get this precipitate readily the best pH range is

< 1

2-3

3-4

9-11

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The correct answer is:

Nickel ions can be best estimated qualitatively and quantitatively by the use of dimethylglyoxine (DMG) solution. The reaction occurs as follows:

It may be evidently seen that in this reaction each DMG ion lose one proton.
Hence, a basic medium is needed to facilitate this reaction. Thus this reaction is carried out in ammoniacal solution

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