In the process of extraction of gold, (2003) Roasted gold ore + CN – + H 2 O O _ 2 [X] +…
Chemistry · JEE Advanced · NTA Exams — General Principles and Processes of Isolation of Elements
In the process of extraction of gold, (2003)
Roasted gold ore + CN– + H2O \(\xrightarrow{\mathrm{O}_{2}}\) [X] + HO
[X] + Zn
[Y] + Au
Identify the complexes [X] and [Y]
Roasted gold ore + CN– + H2O \(\xrightarrow{\mathrm{O}_{2}}\) [X] + HO
[X] + Zn
[Y] + Au Identify the complexes [X] and [Y]
- X = [Au(CN)2]–, Y = Zn(CN)4]2–
- X = [Au(CN)4]3–, Y = [Zn(CN)4]2–
- X = [Au(CN)2]–, Y = [Zn(CN)6]4–
- X = [Au(CN)4]–, Y = [Zn(CN)4]2–
Answer
(A) X = [Au(CN) 2 ] – , Y = Zn(CN) 4 ] 2–
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