Reaction of Amines with Nitrous Acid - Chemistry LibreTexts
Jan 23, 2023 · Nitrous acid (\ (HNO_2\) or \ (HONO\)) reacts with aliphatic amines in a fashion that provides a useful test for distinguishing primary, secondary and tertiary amines. Nitrous acid is a Brønsted acid of moderate strength (pK a = 3.3).
HNO2 + H2O (Nitrous Acid + Water) - YouTube
In this video we will look at the equation for HNO2 + H2O and write the products. When we add HNO2 to H2O the HNO2 will dissociate and break into H+ and NO...
Nitrous acid - Wikipedia
Nitrous acid reacts rapidly with aliphatic alcohols to produce alkyl nitrites, which are potent vasodilators: (CH 3) 2 CHCH 2 CH 2 OH + HNO 2 → (CH 3) 2 CHCH 2 CH 2 ONO + H 2 O. The carcinogens called nitrosamines are produced, usually not intentionally, by the reaction of nitrous acid with secondary amines:
23.10: Amines with Nitrous Acid - Chemistry LibreTexts
Jul 31, 2021 · Some of the most important reactions of amines are brought about by nitrous acid \ (\left ( \ce {HONO} \right)\). The character of the products depends very much on whether the amine is primary, secondary, or tertiary.
The Reaction of Amines with Nitrous Acid - Chemistry Steps
This reaction is called diazotization and begins with nucleophilic attack of the amine on the nitrosonium ion followed by deprotonation. After a proton transfer, an N -nitrosamine is generated which is eventually converted into a diazonium salt by loss of H 2 O:
16.12: The Mechanism for the Reaction of Amines with Nitrous …
The reactions of phenylamine with nitrous acid. Nitrous acid (also known as nitric(III) acid) has the formula HNO 2. It is sometimes written as HONO to show the way it is joined up. Nitrous acid decomposes very readily and is always made in situ.
Reactions of Amines (continued) - Michigan State University
Nitrous acid (HNO 2 or HONO) reacts with aliphatic amines in a fashion that provides a useful test for distinguishing primary, secondary and tertiary amines. Nitrous acid is a Brønsted acid of moderate strength (pK a = 3.3). Because it is unstable, it is prepared immediately before use in the following manner:
Reactions of Diazonium Salts: Sandmeyer and Related Reactions
Dec 3, 2018 · The key purpose of HCl is to further convert HNO 2 into the powerful electrophile NO +, the “ nitrosonium ion “, which is the key electrophile in the reaction that forms the diazonium salt. The nitrosonium ion is formed through protonation of OH and resultant loss of water: Part 2: Formation of the diazonium ion.
AMINES AND NITROUS ACID - chemguide
Nitrous acid, HNO 2, (sometimes written as HONO to show its structure) is unstable and is always prepared in situ. It is usually made by reacting a solution containing sodium or potassium nitrite (sodium or potassium nitrate (III)) with hydrochloric acid. Nitrous acid is a weak acid and so you get the reaction:
Why is nitrous acid prepared in situ? - Chemistry Stack Exchange
May 5, 2017 · Nitrous acid ($\ce {HNO2}$) has an intermediate oxidation state of +3, and hence, it tends to disproportionate into more stable oxidation states: $$\ce {2HNO2 -> NO2 + NO + H2O}$$. $\ce {NO2}$ itself dissolves in water to give $\ce {HNO3}$ and $\ce {HNO2}$.