Write equations for the following reactions :

Copper and concentrated nitric acid.

1. Copper and concentrated Nitric acid($\mathit{H}\mathit{N}{\mathit{O}}_{\mathbf{3}}$) react to form Copper Nitrate, Nitrogen dioxide, and water.
2. So the equation for the reaction is,

$\underset{Copper}{Cu\left(s\right)}+4\underset{Nitricacid}{HN{O}_3\left(l\right)}\to \underset{Coppernitrate}{Cu{\left(N{O}_3\right)}_2}+\underset{Nitrogendioxide}{2N{O}_2\left(g\right)}+2H_{2}O\left(l\right)$