You-iggy

2AsH3 + 4HNO3 → As2O3 + 4NO + 5H2O

The reaction of arsine and nitric acid yields diarsenic trioxide, nitrogen monoxide, 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 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
AsH3Arsine2
Reducing
Reducing
HNO3Nitric acid4
Oxidizing
Oxidizing

Products

Chemical formulaNameCoefficientTypeType in general
equation
As2O3Diarsenic trioxide1
Oxidized
NONitrogen monoxide4
Reduced
H2OWater5

Thermodynamic changes

Changes in standard condition (1)

Reaction of arsine and nitric acid
ΔrG−1230.69 kJ/mol
K4.05 × 10215
pK−215.61
2AsH3Gas + 4HNO3Liquid
As2O3Crystalline solidoctahedral + 4NOGas + 5H2OLiquid
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
−1161.60−1230.69231.775.86
per 1 mol of
−580.800−615.345115.837.93
per 1 mol of
−290.400−307.67357.9218.96
per 1 mol of
−1161.60−1230.69231.775.86
per 1 mol of
−290.400−307.67357.9218.96
per 1 mol of
−232.320−246.13846.3415.17

Changes in standard condition (2)

Reaction of arsine and nitric acid
ΔrG−1231.44 kJ/mol
K5.48 × 10215
pK−215.74
2AsH3Gas + 4HNO3Liquid
As2O3Crystalline solidmonoclinic + 4NOGas + 5H2OLiquid
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
−1159.4−1231.44242
per 1 mol of
−579.70−615.720121
per 1 mol of
−289.85−307.86060.5
per 1 mol of
−1159.4−1231.44242
per 1 mol of
−289.85−307.86060.5
per 1 mol of
−231.88−246.28848.4

Changes in aqueous solution

Reaction of arsine and nitric acid
2AsH3Gas + 4HNO3Ionized aqueous solution
As2O3Aqueous solution + 4NOGas + 5H2OLiquid
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
−998.4
per 1 mol of
−499.2
per 1 mol of
−249.6
per 1 mol of
−998.4
per 1 mol of
−249.6
per 1 mol of
−199.7

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]
NO (g)90.25[1]86.55[1]210.761[1]29.844[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

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)