Question

When copper turnings are added to silver nitrate solution, a blue coloured solution is formed after some time. It is because, copper.

• A. Displaces silver from the solution
• B. Forms a blue coloured complex with $AgNO_{3}$
• C. Is oxidised to $Cu^{2 +}$
• D. Is reduced to $Cu^{2 +}$

Answer 1

Answer: (C)

Is oxidised to $Cu^{2 +}$

Answer 2

Cu is above of Ag in electrochemical series and thus $Cu + 2Ag^{+} \rightarrow Cu^{2 +} + 2Ag$ reaction occurs.