Question

When a copper wire is placed in a solution of $$AgNO_3$$, the solution acquire blue colour. This is due to the formation of:

Answer 1

Correct option is A. $$Cu^{2+}$$ ion

Since, $$Ag^+$$ ions are electrode to $$Ag$$ and

$$E^o_{Ag^+ /Ag} > E^o _{Cu^{++}/ Cu}Cu$$ is oxidized to $$Cu^{++}$$