Question

zinc which contains copper as an impurity

Answer 1

Zinc$\left(\mathrm{Zn}\right)$ which contains copper as an impurity is amalgamated zinc.

• Amalgamated zinc is zinc that has been surface treated with mercury to form a surface amalgam containing little contamination from other elements.
• It is typically used for reduction and is written as $\mathrm{Zn}\left(\mathrm{Hg}\right)$ in reactions.