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2SrCl2 + O2 🔥→ 2SrO + 2Cl2

The reaction of strontium chloride and oxygen yields strontium oxide and chlorine. 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 categories

Reaction data

Chemical equation

General equation

Reaction of hardly oxidizable species and oxidizing species
Hardly oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reaction of strontium chloride and oxygen

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
SrCl2Strontium chloride2
Reducing
Hardly oxidizable
O2Oxygen1
Oxidizing
Oxidizing

Products

Chemical formulaNameCoefficientTypeType in general
equation
SrOStrontium oxide2
Reduced
Cl2Chlorine2
Oxidized

Thermodynamic changes

Changes in standard condition

Reaction of strontium chloride and oxygen
ΔrG438.4 kJ/mol
K0.16 × 10−76
pK76.80
2SrCl2Crystalline solidα + O2Gas
🔥
2SrOCrystalline solid + 2Cl2Gas
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
473.8438.4120.1−22.70
per 1 mol of
236.9219.260.05−11.35
per 1 mol of
473.8438.4120.1−22.70
per 1 mol of
236.9219.260.05−11.35
per 1 mol of
236.9219.260.05−11.35

Changes in aqueous solution (1)

Reaction of strontium chloride and oxygen
ΔrG503.6 kJ/mol
K0.59 × 10−88
pK88.23
2SrCl2Ionized aqueous solution + O2Un-ionized aqueous solution
🔥
2SrOCrystalline solid + 2Cl2Gas
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
587.9503.6283.4
per 1 mol of
293.9251.8141.7
per 1 mol of
587.9503.6283.4
per 1 mol of
293.9251.8141.7
per 1 mol of
293.9251.8141.7

Changes in aqueous solution (2)

Reaction of strontium chloride and oxygen
ΔrG517.5 kJ/mol
K0.22 × 10−90
pK90.66
2SrCl2Ionized aqueous solution + O2Un-ionized aqueous solution
🔥
2SrOCrystalline solid + 2Cl2Un-ionized aqueous solution
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
541.1517.579
per 1 mol of
270.6258.840
per 1 mol of
541.1517.579
per 1 mol of
270.6258.840
per 1 mol of
270.6258.840

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
SrCl2 (cr)
α
-828.9[1]-781.1[1]114.85[1]75.60[1]
SrCl2 (g)-485.8[1]-496.2[1]310.81[1]55.77[1]
SrCl2 (ai)-880.10[1]-821.91[1]80.3[1]
SrCl2 (cr)
1 hydrate
-1136.8[1]-1036.3[1]172[1]120.1[1]
SrCl2 (cr)
2 hydrate
-1438.0[1]-1281.8[1]218[1]160.2[1]
SrCl2 (cr)
6 hydrate
-2623.8[1]-2240.92[1]390.8[1]
O2 (g)0[1]0[1]205.138[1]29.355[1]
O2 (ao)-11.7[1]16.4[1]110.9[1]
* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution, (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
SrO (cr)-592.0[1]-561.9[1]54.4[1]45.02[1]
SrO (g)-8[1]
Cl2 (g)0[1]0[1]223.066[1]33.907[1]
Cl2 (ao)-23.4[1]6.94[1]121[1]
* (cr):Crystalline solid, (g):Gas, (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)