Dimethyl glyoxime gives a red precipitate with Ni 2+, which is used for its detection. To get this precipitate readily the best pH range is

Question

Dimethyl glyoxime gives a red precipitate with Ni 2+, which is used for its detection. To get this precipitate readily the best pH range is (A) < 1 (B) 2 &hyphen; 3 (C) 3 &hyphen; 4 (D) 9 &hyphen; 11

Tardigrade Admin · Accepted Answer

Nickel ions ( Ni 2+) 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 ( pH =9-11)

Q. Dimethyl glyoxime gives a red precipitate with $N i^{2 +}$ , which is used for its detection. To get this precipitate readily the best $p H$ range is

< 1

2 ‐ 3

3 ‐ 4

9 ‐ 11

Q. Dimethyl glyoxime gives a red precipitate with Ni2+, which is used for its detection. To get this precipitate readily the best pH range is

< 1

2 ‐ 3

3 ‐ 4

9 ‐ 11

Q. Dimethyl glyoxime gives a red precipitate with $N i^{2 +}$ , which is used for its detection. To get this precipitate readily the best $p H$ range is