Question

What is the reaction of copper in $\mathrm{HCl}$?

Answer 1

Copper

• Copper is a chemical element having an atomic number $29$ and is represented by a symbol $\mathrm{Cu}$.
• Copper is derived from the Latin word cuprum.
• It is ductile, malleable metal with excellent thermal and electrical conductivity.
• A freshly exposed pure copper surface is pinkish-orange in color.

The reaction of copper with $\mathrm{HCl}$

• Copper does not react with $\mathrm{HCl}$ acid.
• Metals with lower standard reduction potentials than hydrogen react with non-oxidizing acids such as $\mathrm{HCl}$ and dilute ${\mathrm{H}}_2{\mathrm{SO}}_4$ to displace hydrogen from them.
• The reaction can be shown as follows:
• $\mathrm{Cu}\left(\mathrm{s}\right)+2\mathrm{HCl}\left(\mathrm{aq}\right)\stackrel{}{\to }{\mathrm{CuCl}}_2\left(\mathrm{s}\right)+{\mathrm{H}}_2\left(\mathrm{g}\right)$