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MgB4O7 🔥→ MgO + 2B2O3

Decomposition of magnesium tetraborate yields magnesium oxide and diboron trioxide (Other reactions are here). This reaction is an acid-base 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

Thermal decomposition without redox
Thermally decomposable substanceLewis conjugate
🔥
ProductLewis acid + ProductLewis base

Oxidation state of each atom

Decomposition of magnesium tetraborate

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
MgB4O7Magnesium tetraborate1
Lewis conjugate
Thermally decomposable
Oxoacid salt
Salt of oxoacid and hydroxide base

Products

Chemical formulaNameCoefficientTypeType in general
equation
MgOMagnesium oxide1
Lewis acid
Lewis base
Basic oxide
B2O3Diboron trioxide2
Lewis acid
Acidic oxide

Thermodynamic changes

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
MgB4O7

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
MgO (cr)-597.98[1]-565.95[1]27.91[1]37.66[1]
MgO (g)17[1]
B2O3 (cr)-1272.77[1]-1193.65[1]53.97[1]62.93[1]
B2O3 (am)-1254.53[1]-1182.3[1]77.8[1]61.1[1]
B2O3 (g)-843.79[1]-831.97[1]279.81[1]66.86[1]
* (cr):Crystalline solid, (g):Gas, (am):Amorphous solid

References

List of references

  1. 1