1.

Using the extraction of gold the following reactions take placeAu CN- H2O [X][X] Zn ¾® [Y] AuX and Y are respectively?

A. [Au(CN)2]- and [ZN(CN)6]4-
B. [Au(CN)4]2- and [ZN(CN)4]2-
C. [Au(CN)4]3- and [ZN(CN)4]2-
D. [Au(CN)2]- and [ZN(CN)4]2-
Answer» E.


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