Home Chemistry Co-ordinatios Compounds Application of Organometallics Dimethyl glyoxime gives a red precipitate wi…
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

A
< 1
B
2-3
C
3-4
D
9-11

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Text Solution

Verified by Experts
The correct answer is:
D

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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