According to Bronsted principle, an aqueous solution of ${\mathrm{HNO}}_3$ will contain

According to Bronsted principle ${\mathrm{HNO}}_3$ is acid, it gives ${\mathrm{H}}^{+}$ in aqueous solution  to form  ${\mathrm{H}}_3{\mathrm{O}}^{+}$and  ${\mathrm{NO}}_3^{-}$.