WBJEE · Chemistry · General Principles and Processes of Isolation of Metals
"Extraction of gold \((\mathrm{Au})\) involves the formation of complex ions \(X\) and \(Y\)
\(X\) and \(Y\) respectively are
- A \(Au(CN) ^{-}_{2}\) and \(\mathrm{Zn} (\mathrm{CN)}_{4}^{2-}\)
- B \(Au(CN) ^{3-}_{4}\) and \(\mathrm{Zn} (\mathrm{CN)}_{4}^{2-}\)
- C \(Au(CN) ^{-}_{3}\) and \(\mathrm{Zn} (\mathrm{CN)}_{6}^{4-}\)
- D \(Au(CN) ^{-}_{4}\) and \(\mathrm{Zn} (\mathrm{CN)}_{3}^{-}\)
Answer & Solution
Correct Answer
(A) \(Au(CN) ^{-}_{2}\) and \(\mathrm{Zn} (\mathrm{CN)}_{4}^{2-}\)
Step-by-step Solution
Detailed explanation
Extraction of gold (Au) involves the following sequence of reaction,…
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