NEETChemistryGeneral Principles and Processes of Isolation of Metals
Which chemical equation represents the formation of metal compounds during the leaching process?
Options
- A4M(s) + 8CN–(aq) + 2H 2 O(aq) + O2(g) → 4[M(CN) 2 ]–(aq) + 4OH–(aq) (M= Ag or Au)
- B2M(s) + Zn(CN) 4 (aq) → 2[M(CN) 2 ]2-(aq) + Zn(s)
- C4Ag(s) + 8CN–(aq) + 2H 2 O(aq) + O 2 (g) → 4[Ag(CN) 2 ]–(aq) + 4OH–(aq)
- D2Au(s) + 4CN–(aq) + 2H 2 O(aq) + O2(g) → 2[Au(CN) 2 ]–(aq) + 4OH–(aq)
Correct answer
A. 4M(s) + 8CN–(aq) + 2H 2 O(aq) + O2(g) → 4[M(CN) 2 ]–(aq) + 4OH–(aq) (M= Ag or Au)
Step-by-step solution
This equation represents the formation of metal compounds during leaching.