Question

22. A copper coin is kept immersed in a
solution of silver nitrate for some time.
What will happen to the
coin and the colour of the solution ?
(4 Points)​

Answer 1

Answer:

1. A layer of silver metal is deposited on the copper coin.
2. There is a change of colour of the solution from colourless to blue.

Explanation:

1. In accordance with the reactivity series, copper metal is more reactive than silver.
2. Thus, on keeping a copper metal immersed in a silver nitrate solution, copper displaces silver from its salt solution, i.e. silver nitrate solution to form Copper (II) Nitrate Cu(NO₃)₂.
3. As a result, a precipitate of silver metal is seen depositing on the copper coin.
4. The solution turns blue due to formation of Copper (II) Nitrate Cu(NO₃)₂.
5. The chemical reaction involved is as follows:

        Cu (s) + 2AgNO₃ (aq) → Cu(NO₃)₂ (aq) + 2Ag (s)

Hope you got that.

Thank You.