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14AsH3 + 12HNO3 → 7As2O3 + 6N2H4 + 15H2O

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Reaction of arsine and nitric acid
14AsH3Arsine + 12HNO3Nitric acid
⟶
7As2O3Diarsenic trioxide + 6N2H4Hydrazine + 15H2OWater

The reaction of arsine and nitric acid yields diarsenic trioxide, hydrazine, 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

Reaction of arsine and nitric acid
14AsH3Arsine + 12HNO3Nitric acid
⟶
7As2O3Diarsenic trioxide + 6N2H4Hydrazine + 15H2OWater

General equation

Reaction of reducing species and oxidizing species
Reducing speciesReducing agent + Oxidizing speciesOxidizing agent
⟶
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reaction of arsine and nitric acid

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
AsH3Arsine14
Reducing
Reducing
HNO3Nitric acid12
Oxidizing
Oxidizing

Products

Chemical formulaNameCoefficientTypeType in general
equation
As2O3Diarsenic trioxide7
Oxidized
–
N2H4Hydrazine6
Reduced
–
H2OWater15
–
–

Thermodynamic changes

Changes in standard condition (1)

Reaction of arsine and nitric acid
◆
ΔrG−6690.94 kJ/mol
K1.59 × 101172
pK−1172.20
14AsH3Gas + 12HNO3Liquid
⟶
7As2O3Crystalline solidoctahedral + 6N2H4Liquid + 15H2OLiquid
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
−7423.42−6690.94−2460.5540.72
per 1 mol of
−530.244−477.924−175.7538.623
per 1 mol of
−618.618−557.578−205.0445.060
per 1 mol of
−1060.49−955.849−351.5077.246
per 1 mol of
−1237.24−1115.16−410.0890.120
per 1 mol of
−494.895−446.063−164.0336.048

Changes in standard condition (2)

Reaction of arsine and nitric acid
◆
ΔrG−6696.19 kJ/mol
K1.32 × 101173
pK−1173.12
14AsH3Gas + 12HNO3Liquid
⟶
7As2O3Crystalline solidmonoclinic + 6N2H4Liquid + 15H2OLiquid
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
−7408.2−6696.19−2391–
per 1 mol of
−529.16−478.299−170.8–
per 1 mol of
−617.35−558.016−199.3–
per 1 mol of
−1058.3−956.599−341.6–
per 1 mol of
−1234.7−1116.03−398.5–
per 1 mol of
−493.88−446.413−159.4–

Changes in aqueous solution

Reaction of arsine and nitric acid
14AsH3Gas + 12HNO3Ionized aqueous solution
⟶
7As2O3Aqueous solution + 6N2H4Un-ionized aqueous solution + 15H2OLiquid
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
−6911.0–––
per 1 mol of
−493.64–––
per 1 mol of
−575.92–––
per 1 mol of
−987.29–––
per 1 mol of
−1151.8–––
per 1 mol of
−460.73–––

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
AsH3 (g)66.44[1]68.93[1]222.78[1]38.07[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]
* (g):Gas, (l):Liquid, (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
As2O3 (cr)
octahedral
-656.97[1]-576.22[1]107.1[1]95.65[1]
As2O3 (cr)
monoclinic
-654.8[1]-576.97[1]117[1]–
As2O3 (g)-604.6[1]-548.9[1]191[1]–
As2O3 (aq)-626.8[1]–––
N2H4 (l)50.63[1]149.34[1]121.21[1]98.87[1]
N2H4 (g)95.40[1]159.35[1]238.47[1]49.58[1]
N2H4 (ao)34.31[1]128.1[1]138[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, (g):Gas, (aq):Aqueous solution, (l):Liquid, (ao):Un-ionized aqueous solution

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)