Question

Write the chemical reactions involved in the extractions of gold using sodium cyanide

Answer 1

Answer:

Explanation:the extraction of the gold by nacn is called McArthur forest cyanide process. Mainly it is a chemical leaching process. The reaction are

2NaCN+Au(impure) +O2=Na(AU(CN)2)+H2O

And,NA(AU(CN)2)+Zn=au+Na(au(cn))