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 equation.
✓
Answer
When a copper coin is dipped in a silver nitrate solution, more reactive copper displaces silver from silver nitrate solution. The silver so liberated deposits on the copper coin. As a result, a shiny coat of silver is formed on the coin.
$Cu _{( s )}+2 AgNO _{3( aq )} \rightarrow Cu \left( NO _3\right)_{2( aq )}+2 Ag _{( s )}$
$Cu _{( s )}+2 AgNO _{3( aq )} \rightarrow Cu \left( NO _3\right)_{2( aq )}+2 Ag _{( s )}$
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