You-iggy

HCl + 6KNO3 + 6H+ 🔥→ HClO3 + 6NO2 + 6K+ + 3H2O

Reaction of hydrogen chloride and potassium nitrate under acidic condition

The reaction of hydrogen chloride, potassium nitrate, and hydrogen ion yields chloric acid, nitrogen dioxide, potassium ion, 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 hydrogen chloride and potassium nitrate under acidic condition

General equation

Reaction of hardly oxidizable species and oxidizing species under acidic condition
Hardly oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent + H+Non-redox agent
ProductOxidation product + ProductReduction product + H2ONon-redox product

Oxidation state of each atom

Reaction of hydrogen chloride and potassium nitrate under acidic condition

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
HClHydrogen chloride1
Reducing
Hardly oxidizable
KNO3Potassium nitrate6
Oxidizing
Oxidizing under acidic condition
H+Hydrogen ion6
Hydrogen ion

Products

Chemical formulaNameCoefficientTypeType in general
equation
HClO3Chloric acid1
Oxidized
NO2Nitrogen dioxide6
Reduced
K+Potassium ion6
H2OWater3
Water

Thermodynamic changes

Changes in standard condition

Reaction of hydrogen chloride and potassium nitrate under acidic condition
ΔrG387.31 kJ/mol
K0.14 × 10−67
pK67.85
HClIonized aqueous solution + 6KNO3Ionized aqueous solution + 6H+Un-ionized aqueous solution
🔥
HClO3Ionized aqueous solution + 6NO2Gas + 6K+Un-ionized 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
648.94387.31877.5
per 1 mol of
648.94387.31877.5
per 1 mol of
108.1664.552146.3
per 1 mol of
Hydrogen ion
108.1664.552146.3
per 1 mol of
648.94387.31877.5
per 1 mol of
108.1664.552146.3
per 1 mol of
Potassium ion
108.1664.552146.3
per 1 mol of
216.31129.10292.5

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
HCl (g)-92.307[1]-95.299[1]186.908[1]29.12[1]
HCl (ai)-167.159[1]-131.228[1]56.5[1]-136.4[1]
KNO3 (cr)-494.63[1]-394.86[1]133.05[1]96.40[1]
KNO3 (ai)-459.74[1]-394.53[1]248.9[1]-64.9[1]
H+ (g)1536.202[1]
H+ (ao)0[1]0[1]0[1]0[1]
* (g):Gas, (ai):Ionized aqueous solution, (cr):Crystalline solid, (ao):Un-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
HClO3 (ai)-103.97[1]-7.95[1]162.3[1]
NO2 (g)33.18[1]51.31[1]240.06[1]37.20[1]
K+ (g)514.26[1]
K+ (ao)-252.38[1]-283.27[1]102.5[1]21.8[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]
* (ai):Ionized aqueous solution, (g):Gas, (ao):Un-ionized aqueous solution, (cr):Crystalline solid, (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)