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  3. 8KI + 10RbNO3 + 10H^+ ๐Ÿ”ฅโ†’ 8KNO3 + 4I2 + NH4NO3 + 10Rb^+ + 3H2O

8KI + 10RbNO3 + 10H+ ๐Ÿ”ฅโ†’ 8KNO3 + 4I2 + NH4NO3 + 10Rb+ + 3H2O

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Reaction of potassium iodide and rubidium nitrate under acidic condition
8KIPotassium iodide + 10RbNO3Rubidium nitrate + 10H+Hydrogen ion
๐Ÿ”ฅ
โŸถ
8KNO3Potassium nitrate + 4I2Iodine + NH4NO3Ammonium nitrate + 10Rb+Rubidium ion + 3H2OWater

The reaction of potassium iodide, rubidium nitrate, and hydrogen ion yields potassium nitrate, iodine, ammonium nitrate, rubidium 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 potassium iodide and rubidium nitrate under acidic condition
8KIPotassium iodide + 10RbNO3Rubidium nitrate + 10H+Hydrogen ion
๐Ÿ”ฅ
โŸถ
8KNO3Potassium nitrate + 4I2Iodine + NH4NO3Ammonium nitrate + 10Rb+Rubidium ion + 3H2OWater

General equation

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

Oxidation state of each atom

Reaction of potassium iodide and rubidium nitrate under acidic condition

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
KIPotassium iodide8
Reducing
Oxidizable
RbNO3Rubidium nitrate10
Oxidizing
Oxidizing under acidic condition
H+Hydrogen ion10
โ€“
Hydrogen ion

Products

Chemical formulaNameCoefficientTypeType in general
equation
KNO3Potassium nitrate8
โ€“
โ€“
I2Iodine4
Oxidized
โ€“
NH4NO3Ammonium nitrate1
Reduced
โ€“
Rb+Rubidium ion10
โ€“
โ€“
H2OWater3
โ€“
Water

Thermodynamic changes

Changes in standard condition

Reaction of potassium iodide and rubidium nitrate under acidic condition
โ—†
ฮ”rGโˆ’201.19 kJ/mol
K1.77 ร— 1035
pKโˆ’35.25
8KIIonized aqueous solution + 10RbNO3Ionized aqueous solution + 10H+Un-ionized aqueous solution
๐Ÿ”ฅ
โŸถ
8KNO3Ionized aqueous solution + 4I2Un-ionized aqueous solution + NH4NO3Ionized aqueous solution + 10Rb+Un-ionized aqueous solution + 3H2OLiquid
Standard enthalpy
of reaction
ฮ”rHยฐ
kJ ยท molโˆ’1		Standard
Gibbs energy
of reaction
ฮ”rGยฐ
kJ ยท molโˆ’1		Standard entropy
of reaction
ฮ”rSยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard heat
capacity of reaction
at constant pressure
ฮ”rCpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
per 1 mol of
Equation
โˆ’250.8โˆ’201.19โˆ’163.9โ€“
per 1 mol of
โˆ’31.35โˆ’25.149โˆ’20.49โ€“
per 1 mol of
โˆ’25.08โˆ’20.119โˆ’16.39โ€“
per 1 mol of
Hydrogen ion
โˆ’25.08โˆ’20.119โˆ’16.39โ€“
per 1 mol of
โˆ’31.35โˆ’25.149โˆ’20.49โ€“
per 1 mol of
โˆ’62.70โˆ’50.297โˆ’40.98โ€“
per 1 mol of
โˆ’250.8โˆ’201.19โˆ’163.9โ€“
per 1 mol of
Rubidium ion
โˆ’25.08โˆ’20.119โˆ’16.39โ€“
per 1 mol of
โˆ’83.60โˆ’67.063โˆ’54.63โ€“

Thermodynamic data of reactants

Chemical formulaStandard enthalpy
of formation
ฮ”fHยฐ
kJ ยท molโˆ’1		Standard Gibbs
energy of
formation
ฮ”fGยฐ
kJ ยท molโˆ’1		Standard
molar entropy
Sยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard molar
heat capacity at
constant pressure
Cpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
KI (cr)-327.900[1]-324.892[1]106.32[1]52.93[1]
KI (g)-125.5[1]-166.1[1]258.3[1]37.11[1]
KI (ai)-307.57[1]-334.85[1]213.8[1]-120.5[1]
RbNO3 (cr)-495.05[1]-395.78[1]147.3[1]102.1[1]
RbNO3 (ai)-458.52[1]-395.24[1]267.8[1]โ€“
H+ (g)1536.202[1]โ€“โ€“โ€“
H+ (ao)0[1]0[1]0[1]0[1]
* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution

Thermodynamic data of products

Chemical formulaStandard enthalpy
of formation
ฮ”fHยฐ
kJ ยท molโˆ’1		Standard Gibbs
energy of
formation
ฮ”fGยฐ
kJ ยท molโˆ’1		Standard
molar entropy
Sยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard molar
heat capacity at
constant pressure
Cpยฐ
J ยท Kโˆ’1 ยท molโˆ’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]
I2 (cr)0[1]0[1]116.135[1]54.438[1]
I2 (g)62.438[1]19.327[1]260.69[1]36.90[1]
I2 (ao)22.6[1]16.40[1]137.2[1]โ€“
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]
Rb+ (g)490.101[1]โ€“โ€“โ€“
Rb+ (ao)-251.17[1]-283.98[1]121.50[1]โ€“
H2O (cr)โ€“โ€“โ€“โ€“
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, (g):Gas, (ao):Un-ionized 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)