Fuming nitric acid has?
NO dissolved in Conc.HNO3.
2NO3 dissolved in Conc.2HCl.
NO3 dissolved in Conc.HCl.
NO2 dissolved in Conc.HNO3.
Fuming nitric acid is obtained by distilling Conc.HNO3 with little starch.It contains NO2 dissolved in Conc.HNO3.
In the contact process, SO3 is dissolved in concentrated Sulphuric acid to produce:
Acids when dissolved in water produce: