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8LiBr + 10HNO3 → 8LiNO3 + 4Br2 + NH4NO3 + 3H2O

The reaction of lithium bromide and nitric acid yields lithium nitrate, bromine, ammonium nitrate, and water (Other reactions are here). This reaction is an oxidation-reduction 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

Reaction of hardly oxidizable species and oxidizing species
Hardly oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
LiBrLithium bromide8
Reducing
Hardly oxidizable
HNO3Nitric acid10
Oxidizing
Oxidizing

Products

Chemical formulaNameCoefficientTypeType in general
equation
LiNO3Lithium nitrate8
Br2Bromine4
Oxidized
NH4NO3Ammonium nitrate1
Reduced
H2OWater3

Thermodynamic changes

Changes in standard condition

Reaction of lithium bromide and nitric acid
ΔrG−401.0 kJ/mol
K1.79 × 1070
pK−70.25
8LiBrCrystalline solid + 10HNO3Liquid
8LiNO3Crystalline solid + 4Br2Liquid + NH4NO3Crystalline solid + 3H2OLiquid
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
−537.39−401.0−460.4
per 1 mol of
−67.174−50.13−57.55
per 1 mol of
−53.739−40.10−46.04
per 1 mol of
−67.174−50.13−57.55
per 1 mol of
−134.35−100.3−115.1
per 1 mol of
−537.39−401.0−460.4
per 1 mol of
−179.13−133.7−153.5

Changes in aqueous solution (1)

Reaction of lithium bromide and nitric acid
ΔrG168.4 kJ/mol
K0.31 × 10−29
pK29.50
8LiBrIonized aqueous solution + 10HNO3Ionized aqueous solution
8LiNO3Ionized aqueous solution + 4Br2Un-ionized aqueous solution + NH4NO3Ionized aqueous solution + 3H2OLiquid
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
179.41168.442.7
per 1 mol of
22.42621.055.34
per 1 mol of
17.94116.844.27
per 1 mol of
22.42621.055.34
per 1 mol of
44.85242.1010.7
per 1 mol of
179.41168.442.7
per 1 mol of
59.80356.1314.2

Changes in aqueous solution (2)

Reaction of lithium bromide and nitric acid
ΔrG151.6 kJ/mol
K0.28 × 10−26
pK26.56
8LiBrIonized aqueous solution + 10HNO3Ionized aqueous solution
8LiNO3Un-ionized aqueous solution + 4Br2Un-ionized aqueous solution + NH4NO3Ionized aqueous solution + 3H2OLiquid
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
151.6
per 1 mol of
18.95
per 1 mol of
15.16
per 1 mol of
18.95
per 1 mol of
37.90
per 1 mol of
151.6
per 1 mol of
50.53

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
LiBr (cr)-351.213[1]-342.00[1]74.27[1]
LiBr (g)224.33[1]33.93[1]
LiBr (ai)-400.041[1]-397.27[1]95.8[1]-73.2[1]
LiBr (cr)
1 hydrate
-662.58[1]-594.29[1]109.6[1]
LiBr (cr)
2 hydrate
-962.7[1]-840.5[1]162.3[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, (g):Gas, (ai):Ionized aqueous solution, (l):Liquid

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]
Br2 (cr)
Br2 (l)0[1]0[1]152.231[1]75.689[1]
Br2 (g)30.907[1]3.110[1]245.463[1]36.02[1]
Br2 (ao)-2.59[1]3.93[1]130.5[1]
NH4NO3 (cr)-365.56[1]-183.87[1]151.08[1]139.3[1]
NH4NO3 (ai)-339.87[1]-190.56[1]259.8[1]-6.7[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)