Linked from
The 9 pages that link to Nitrous acid, each with the reason it gives.
Nitrous oxideCompared with: Despite the similar name, nitrous acid is not the gas N₂O.
NitrosationRelated: Its acid-dependent reactions provide a common route to nitrosating agents.
DiazotizationRelated: It supplies the nitrosating species that initiates conversion of the amine.
Ammonium nitriteRelated: Nitrite is the conjugate base associated with nitrous acid.