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2LiNO2 + 2HNO3 → 2LiNO3 + N2O3↑ + H2O

The reaction of lithium nitrite and nitric acid yields lithium nitrate, dinitrogen trioxide, and water (Other reactions are here). This reaction is an acid-base reaction and is classified as follows:

Table of contents
  1. 1Reaction data
  2. 2Thermodynamic changes
  3. 3References
  4. 4Related reactions
  5. 5Related categories

Reaction data

Chemical equation

General equation

Oxidation state of each atom

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
LiNO2Lithium nitrite2
Brønsted base
Salt of weak acid
HNO3Nitric acid2
Brønsted acid
Strong acid

Products

Chemical formulaNameCoefficientTypeType in general
equation
LiNO3Lithium nitrate2
Conjugate base
Salt of strong acid
N2O3Dinitrogen trioxide1
Acidic oxide
H2OWater1
Conjugate acid
Water

Thermodynamic changes

Changes in standard condition

Reaction of lithium nitrite and nitric acid
ΔrG−94.4 kJ/mol
K3.45 × 1016
pK−16.54
2LiNO2Crystalline solid + 2HNO3Liquid
2LiNO3Crystalline solid + N2O3Gas + H2OLiquid
Standard enthalpy
of reaction
ΔrH°
kJ · mol−1
Standard
Gibbs energy
of reaction
ΔrG°
kJ · mol−1
Standard entropy
of reaction
ΔrS°
J · K−1 · mol−1
Standard heat
capacity of reaction
at constant pressure
ΔrCp°
J · K−1 · mol−1
per 1 mol of
Equation
−75.4−94.459
per 1 mol of
−37.7−47.230
per 1 mol of
−37.7−47.230
per 1 mol of
−37.7−47.230
−75.4−94.459
per 1 mol of
−75.4−94.459

Changes in aqueous solution (1)

Reaction of lithium nitrite and nitric acid
ΔrG−33.2 kJ/mol
K6.55 × 105
pK−5.82
2LiNO2Ionized aqueous solution + 2HNO3Ionized aqueous solution
2LiNO3Ionized aqueous solution + N2O3Gas + H2OLiquid
Standard enthalpy
of reaction
ΔrH°
kJ · mol−1
Standard
Gibbs energy
of reaction
ΔrG°
kJ · mol−1
Standard entropy
of reaction
ΔrS°
J · K−1 · mol−1
Standard heat
capacity of reaction
at constant pressure
ΔrCp°
J · K−1 · mol−1
per 1 mol of
Equation
7.09−33.2136.2335.9
per 1 mol of
3.54−16.668.10167.9
per 1 mol of
3.54−16.668.10167.9
per 1 mol of
3.54−16.668.10167.9
7.09−33.2136.2335.9
per 1 mol of
7.09−33.2136.2335.9

Changes in aqueous solution (2)

Reaction of lithium nitrite and nitric acid
ΔrG−37.4 kJ/mol
K3.57 × 106
pK−6.55
2LiNO2Ionized aqueous solution + 2HNO3Ionized aqueous solution
2LiNO3Un-ionized aqueous solution + N2O3Gas + H2OLiquid
Standard enthalpy
of reaction
ΔrH°
kJ · mol−1
Standard
Gibbs energy
of reaction
ΔrG°
kJ · mol−1
Standard entropy
of reaction
ΔrS°
J · K−1 · mol−1
Standard heat
capacity of reaction
at constant pressure
ΔrCp°
J · K−1 · mol−1
per 1 mol of
Equation
−37.4
per 1 mol of
−18.7
per 1 mol of
−18.7
per 1 mol of
−18.7
−37.4
per 1 mol of
−37.4

Thermodynamic data of reactants

Chemical formulaStandard enthalpy
of formation
ΔfH°
kJ · mol−1
Standard Gibbs
energy of
formation
ΔfG°
kJ · mol−1
Standard
molar entropy
S°
J · K−1 · mol−1
Standard molar
heat capacity at
constant pressure
Cp°
J · K−1 · mol−1
LiNO2 (cr)-372.4[1]-302.0[1]96[1]
LiNO2 (ai)-383.09[1]-325.5[1]136.8[1]-28.9[1]
LiNO2 (cr)
0.5 hydrate
-423.3[1]
LiNO2 (cr)
1 hydrate
-676.1[1]-544.2[1]121[1]
HNO3 (l)-174.10[1]-80.71[1]155.60[1]109.87[1]
HNO3 (g)-135.06[1]-74.72[1]266.38[1]53.35[1]
HNO3 (ai)-207.36[1]-111.25[1]146.4[1]-86.6[1]
HNO3 (l)
1 hydrate
-473.46[1]-328.77[1]216.90[1]182.46[1]
HNO3 (l)
3 hydrate
-1056.04[1]-811.09[1]346.98[1]325.14[1]
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (l):Liquid, (g):Gas

Thermodynamic data of products

Chemical formulaStandard enthalpy
of formation
ΔfH°
kJ · mol−1
Standard Gibbs
energy of
formation
ΔfG°
kJ · mol−1
Standard
molar entropy
S°
J · K−1 · mol−1
Standard molar
heat capacity at
constant pressure
Cp°
J · K−1 · mol−1
LiNO3 (cr)-483.13[1]-381.1[1]90.0[1]
LiNO3 (ai)-485.85[1]-404.5[1]160.2[1]-18.0[1]
LiNO3 (ao)-406.6[1]
LiNO3 (cr)
3 hydrate
-1374.4[1]-1103.5[1]223.4[1]
N2O3 (l)50.29[1]
N2O3 (g)83.72[1]139.46[1]312.28[1]65.61[1]
H2O (cr)
H2O (l)-285.830[1]-237.129[1]69.91[1]75.291[1]
H2O (g)-241.818[1]-228.572[1]188.825[1]33.577[1]
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution, (l):Liquid, (g):Gas

References

List of references

  1. 1
    Janiel J. Reed (1989)
    The NBS Tables of Chemical Thermodynamic Properties: Selected Values for Inorganic and C1 and C2 Organic Substances in SI Units
    National Institute of Standards and Technology (NIST)