Chemistry · Importance of coordination compounds (in qualitative analysis, extraction of metals and in biological systems)
Which metal is leached from its ore by the use of
Which metal is leached from its ore by the use of \( K C N \)
- A. copper
- B. zinç
- C. Gold
- D. Iron
Step-by-step solution
Gold is extracted from its ores by cyanide leaching. Potassium cyanide (KCN) forms a stable complex with gold, [Au(CN)2]-, which is soluble in water, allowing separation from the ore. This process is known as the MacArthur-Forrest process and is widely used for gold recovery.
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