In the equation 4 M + 8 CN– + 2H2O + O2 → 4 [M(CN)2]– + 4OH–, the metal M is
A. Copper
B. Iron
C. Gold
D. Zinc
Answer:C
In the equation 4 M + 8 CN– + 2H2O + O2 → 4 [M(CN)2]– + 4OH–, the metal M is
A. Copper B. Iron C. Gold D. Zinc