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2CuBr + 6HNO3 🔥→ 2Cu(NO3)2 + N2O4 + 2HBr↑ + 2H2O

The reaction of copper(I) bromide and nitric acid yields copper(II) nitrate, dinitrogen tetraoxide, hydrogen bromide, 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 oxidizable species and oxidizing species
Oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
CuBrCopper(I) bromide2
Reducing
Oxidizable
HNO3Nitric acid6
Oxidizing
Oxidizing

Products

Chemical formulaNameCoefficientTypeType in general
equation
Cu(NO3)2Copper(II) nitrate2
Oxidized
N2O4Dinitrogen tetraoxide1
Reduced
HBrHydrogen bromide2
H2OWater2

Thermodynamic changes

Changes in standard condition

Reaction of copper(I) bromide and nitric acid
2CuBrCrystalline solid + 6HNO3Liquid
🔥
2Cu(NO3)2Crystalline solid + N2O4Liquid + 2HBrGas + 2H2OLiquid
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
−16.0
per 1 mol of
−8.00
per 1 mol of
−2.67
per 1 mol of
−8.00
−16.0
per 1 mol of
−8.00
per 1 mol of
−8.00

Changes in aqueous solution (1)

Reaction of copper(I) bromide and nitric acid
ΔrG71.4 kJ/mol
K0.31 × 10−12
pK12.51
2CuBrCrystalline solid + 6HNO3Ionized aqueous solution
🔥
2Cu(NO3)2Ionized aqueous solution + N2O4Liquid + 2HBrGas + 2H2OLiquid
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
89.571.462.4
per 1 mol of
44.835.731.2
per 1 mol of
14.911.910.4
per 1 mol of
44.835.731.2
89.571.462.4
per 1 mol of
44.835.731.2
per 1 mol of
44.835.731.2

Changes in aqueous solution (2)

Reaction of copper(I) bromide and nitric acid
ΔrG−29.6 kJ/mol
K1.53 × 105
pK−5.19
2CuBrCrystalline solid + 6HNO3Ionized aqueous solution
🔥
2Cu(NO3)2Ionized aqueous solution + N2O4Liquid + 2HBrIonized aqueous solution + 2H2OLiquid
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
−80.8−29.6−170.2
per 1 mol of
−40.4−14.8−85.10
per 1 mol of
−13.5−4.93−28.37
per 1 mol of
−40.4−14.8−85.10
−80.8−29.6−170.2
per 1 mol of
−40.4−14.8−85.10
per 1 mol of
−40.4−14.8−85.10

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
CuBr (cr)-104.6[1]-100.8[1]96.11[1]54.73[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, (l):Liquid, (g):Gas, (ai):Ionized aqueous solution

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
Cu(NO3)2 (cr)-302.9[1]
Cu(NO3)2 (ai)-349.95[1]-157.02[1]193.3[1]
Cu(NO3)2 (cr)
3 hydrate
-1217.1[1]
Cu(NO3)2 (cr)
6 hydrate
-2110.8[1]
N2O4 (l)-19.50[1]97.54[1]209.2[1]142.7[1]
N2O4 (g)9.16[1]97.89[1]304.29[1]77.28[1]
HBr (g)-36.40[1]-53.45[1]198.695[1]29.142[1]
HBr (ai)-121.55[1]-103.96[1]82.4[1]-141.8[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, (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)