A solution of silver nitrate should only be stirred with a spoon made of __________ metal.

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Solution

Copper ( $Cu$ ) metal is more reactive than silver ( $Ag$ ) metal thus, when a copper spoon is stirred in silver nitrate ( ${AgNO}_{3}$ ) solution for some time, the solution turns blue as copper displaces silver from Silver nitrate to form silver metal ( $Ag$ ) and Cupric nitrate ( $Cu {({NO}_{3})}_{2}$ ).
Reaction: $Cu (s) + 2 {AgNO}_{3} (aq) \to Cu {({NO}_{3})}_{2} (aq) + 2 Ag (s) (Copper metal) (Silver nitrate) (Copper nitrate) (Silver metal)$ .
Therefore, a solution of silver nitrate should only be stirred with a spoon made of Copper ( $Cu$ ) metal.

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A solution of silver nitrate should only be stirred with a spoon made of ­­­__________ metal.

A solution of silver nitrate should only be stirred with a spoon made of __________ metal.