Concentrated nitric acid and concentrated sulfuric acid are mixed to form the electrophilic nitrating mixture. An equilibrium is established:
HNO3+H2SO4⇌H2NO3++HSO4− \text{HNO}_3 + \text{H}_2\text{SO}_4 \rightleftharpoons \text{H}_2\text{NO}_3^+ + \text{HSO}_4^- HNO3+H2SO4⇌H2NO3++HSO4−What are the Brønsted–Lowry bases in this equilibrium mixture?
H2SO4\text{H}_2\text{SO}_4H2SO4 and H2NO3+\text{H}_2\text{NO}_3^+H2NO3+
HNO3\text{HNO}_3HNO3 and H2NO3+\text{H}_2\text{NO}_3^+H2NO3+
HNO3\text{HNO}_3HNO3 and HSO4−\text{HSO}_4^-HSO4−
H2SO4\text{H}_2\text{SO}_4H2SO4 and HSO4−\text{HSO}_4^-HSO4−