A) Copper
B) Iron
C) Gold
D) Zinc
Correct Answer: C
Solution :
\[4Au\,+\,8KCN\,+\,2{{H}_{2}}O\,+\,{{O}_{2}}\to \underset{\begin{smallmatrix} (\text{Solube} \\ \text{comple x}) \end{smallmatrix}}{\mathop{4K[Au\,{{(CN)}_{2}}]}}\,+4KOH\]You need to login to perform this action.
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