-
nitrous acid is unstable,
rapidly disproportionating to
nitric oxides: 2
HNO2 → NO2 + NO + H2O In
aqueous solution, the
nitrogen dioxide also disproportionates...
- acid
nitrous acid:
HNO2 ⇌ H+ + NO− 2; pKa ≈ 3.3 at 18 °C
Nitrous acid is also
highly unstable,
tending to disproportionate: 3
HNO2 (aq) ⇌ H3O+ + NO−...
-
kinetically non-favored. The
presence of
small amounts of
nitrous acid (
HNO2)
greatly increases the rate of reaction.
Although chromium (Cr), iron (Fe)...
- all
oxidized atmospheric odd-nitrogen
species (e.g. the sum of NOx, HNO3,
HNO2, etc.) NOz (or NOz) = NOy − NOx
Mixed Oxides of
Nitrogen ("MON"): solutions...
-
nitrous acid: 2 NaNO2 + H2SO4 → 2
HNO2 + Na2SO4 The
nitrous acid then,
under normal conditions, decomposes: 2
HNO2 → NO2 + NO + H2O The
resulting nitrogen...
-
oxygen to form
nitrous acid (
HNO2). The
reaction is
thought to
proceed via the
following stoichiometry: 4 •NO + O2 + 2 H2O → 4
HNO2 Nitric oxide reacts with...
- with
nitrous acid: N2H4 +
HNO2 → HN3 + 2 H2O With the
hydrazinium cation [N2H5]+ this
reaction is
written as: [N2H5]+ +
HNO2 → HN3 + H2O + [H3O]+ Other...
-
overall reactions are: 2 NO2 + H2O →
HNO2 + HNO3 SO2 (aq) + HNO3 → NOHSO4 NOHSO4 +
HNO2 → H2SO4 + NO2 + NO SO2 (aq) + 2
HNO2 → H2SO4 + 2 NO
Nitric oxide escapes...
-
treatment with in situ
prepared nitrous acid (
HNO2; not HNO3). In situ
preparation is
necessary as
HNO2 is
unstable and
decomposes rapidly in aqueous...
- + HNO3 → O=C(CH2)5 +
HNO2 + H2O The
cyclohexanone is then nitrosated,
setting the
stage for the
scission of the C-C bond:
HNO2 + HNO3 → [NO+][NO3]− +...
