A copper coin was electroplated with Zn and t | vedclass

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Question

(D) copper coin is electroplated with zinc $(Zn)$ and then heated at high temperature. During heating, zinc atoms diffuse into the copper lattice to f

Vedclass · Accepted Answer

golden

Vedclass · Answer

(D) copper coin is electroplated with zinc $(Zn)$ and then heated at high temperature. During heating, zinc atoms diffuse into the copper lattice to form an alloy. The resulting alloy is brass, which has a characteristic golden colour. This occurs because the zinc migrates through the copper to form the $\alpha$-form of brass alloy (where the percentage of $Cu > 65 \%$ and $Zn $Zn + Cu \xrightarrow{\Delta} 	ext{Brass (Golden colour)}$. Thus, the correct option is $(D)$.

$A$ copper coin was electroplated with $Zn$ and then heated at high temperature until there is a change in colour. What will be the resulting colour?

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