which of the following shows a brønsted - lowry acid reacting?\nco + no₂ → co₂ + no\nnh₃ + h⁺ → nh₄⁺\nco₃²⁻…

Brief Explanations:

A Brønsted - Lowry acid is a proton donor. In the reaction $\mathrm{HCl}+\mathrm{H}{2}\mathrm{O}\rightarrow\mathrm{H}{3}\mathrm{O}^{+}+\mathrm{Cl}^{-}$, $\mathrm{HCl}$ donates a proton ($\mathrm{H}^{+}$) to water. In the reaction $\mathrm{NH}{3}+\mathrm{H}^{+}\rightarrow\mathrm{NH}{4}^{+}$, $\mathrm{H}^{+}$ is the acid but it is just a proton by itself, not a compound acting as a Brønsted - Lowry acid in the traditional sense. In $\mathrm{CO}{3}^{2 - }+\mathrm{H}^{+}\rightarrow\mathrm{HCO}{3}^{-}$, $\mathrm{H}^{+}$ is the acid source but not a compound acting as an acid. In $\mathrm{CO}+\mathrm{NO}{2}\rightarrow\mathrm{CO}{2}+\mathrm{NO}$, there is no proton - transfer and it is not an acid - base reaction according to Brønsted - Lowry theory.

Answer:

$\mathrm{HCl}+\mathrm{H}{2}\mathrm{O}\rightarrow\mathrm{H}{3}\mathrm{O}^{+}+\mathrm{Cl}^{-}$