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Question

When a copper coin is dipped in silver nitrate solution, a glitter appears on the coin after some time. Why does this happen? Write the chemical eauation.

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Solution

Copper is more reactive than silver. Hence, the displacement reaction occurs. When the copper coin is dipped in silver nitrate solution, it forms copper nitrate and silver metal. A shining white deposit of silver metal is formed on a copper coin. The grey solid crystal (glitters) of Ag metal appears on the copper coin and the solution turns blue in color
.
Balanced equation:

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

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