# How does aniline react with HNO3 in the absence of sulfuric acid?

How does aniline react with $\ce{HNO3}$ in the absence of sulfuric acid? I read that nitration occurs at slow rate, but it didn't explain how nitronium ion is formed.

• Autoprotolysis of HNO3?
– Karl
Aug 18 '18 at 5:31
• forms anilinium nitrate Aug 18 '18 at 7:26
• chemistry.stackexchange.com/questions/31046/… Aug 18 '18 at 22:50
• chemistry.stackexchange.com/questions/9083/… Aug 18 '18 at 23:12
• According to my chemistry teacher, in dilute aqueous nitric acid, the mononitrated product would be obtained while in concentrated acid, the trinitrated product would be obtained. Aug 19 '18 at 0:01