Question

Silver is precipitated out when a copper strip is dipped in silver nitrate solution. The solution turns blue due to the formation of copper ( II) nitrate.

Answer 1

Cu+AgNO3==>Cu(NO3)2+Ag
The silver is precipitated out by making use of displacement reaction in which a more reactive metal copper displaces silver from its salt solution.

Answer 2

Answer:

When one element in a compound is replaced by another element in a reaction is known as a displacement reaction.

Explanation:

Silver is precipitated out when a copper strip is dipped in silver nitrate solution. The solution turns blue due to the formation of copper (II) nitrate. This is because it is a displacement reaction.

Copper displaces silver from silver nitrate to form silver metal and cupric nitrate.

Compared to silver, copper is more reactive.

The reaction of copper with silver nitrate is as follows below:

                          $Cu + 2AgNO_{3}$  →  $Cu(NO_{3} ) _{2} + 2Ag$ ↓

Silver gets precipitated out.

Hence, the solution turns blue due to the formation of cupric (II) nitrate $Cu(NO_{3} )_{2}$ as it is a displacement reaction.

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