Question

Q8 Which of the following metals
reacts with potassium cyanide to
form a complex during an
extraction process?
Ops: A.
Pb
B.
Cu
c.
Ag
D.
Sn​

Answer 1

Metal Ag ( Silver) reacts with potassium cynide to form a complex during extraction process.

• The cyanide method is the process of removing gold or silver from the ores by dissolving potassium cyanide or sodium cyanide in a dilute solution.

• MacArthur-Forrest cycle removes the silver.  

• Throughout this process, silver reacts with potassium cyanide to form soluble complex, the potassium argento cyanide and with scrap zinc to precipitate silver form solution.