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Oxyacids of Nitrogen :



S.N.
Formula
Name of acids
Oxidation No. of N

1
H2N2O2 or HNO
Hyponitrous acid
+1
2
H4N2O4 or H2NO2
Hydroxynitrous acid
+2
3
HONO or HNO2
Nitrous acid
+3
4
HOONO
Pernitrous acid
+4
5
HNO3
Nitric acid
+5
6
HNO4
Pernitric acid
+6
 (1) Hyponitrous acid (H2N2O2):
 Hyponitrous acid is a chemical compound with formula H2N2O2 or HON=NOH. Hyponitrous acid is a weak acid in aqueous solution and decomposes to N2O and water. It is an isomer of nitramide [H2N−NO2].
Hyponitrous acid forms two series of salts, the hyponitrites containing the [ON=NO]2− anion, and the "acid hyponitrites" containing the [HON=NO]anion.
           

(2) Nitrous acid (HNO2):
Nitrous acid (HNO2) is a weak and monobasic acid known only in solution and in the form of nitrite (NO2) salts. Nitrous acid is used to make diazonium salts from amines. The resulting diazonium salts are reagents in azo coupling reactions to give azo dyes.
      

(3) Nitric acid (HNO3):
Nitric acid is also known as aqua fortis (meaning strong water) which was given by alchemists.
 
Related Questions:



Trisilyl amine, N(SiH3)3 is planar whereas trimethyl amines N(CH3)3 is pyramidal. Explain why?.














           

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