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8NaClO + 3Mg(OH)2 🔥→ 2NaClO4 + 3Na2O + 3MgCl2 + 3H2O

The reaction of sodium hypochlorite and magnesium hydroxide yields sodium perchlorate, sodium oxide, magnesium chloride, 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 self redoxing species and base
Self-redoxing speciesSelf redox agent + BaseNon-redox agent
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
NaClOSodium hypochlorite8
Self redoxing
Mg(OH)2Magnesium hydroxide3
Base

Products

Chemical formulaNameCoefficientTypeType in general
equation
NaClO4Sodium perchlorate2
Oxidized
Na2OSodium oxide3
MgCl2Magnesium chloride3
Reduced
H2OWater3

Thermodynamic changes

Changes in standard condition (1)

Reaction of sodium hypochlorite and magnesium hydroxide
ΔrG360.2 kJ/mol
K0.79 × 10−63
pK63.10
8NaClOIonized aqueous solution + 3Mg(OH)2Crystalline solid
🔥
2NaClO4Ionized aqueous solution + 3Na2OCrystalline solid + 3MgCl2Ionized 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
309.5360.2−148
38.6945.02−18.5
103.2120.1−49.3
per 1 mol of
154.8180.1−74.0
per 1 mol of
103.2120.1−49.3
per 1 mol of
103.2120.1−49.3
per 1 mol of
103.2120.1−49.3

Changes in standard condition (2)

Reaction of sodium hypochlorite and magnesium hydroxide
8NaClOIonized aqueous solution + 3Mg(OH)2Amorphous solidprecipitated
🔥
2NaClO4Ionized aqueous solution + 3Na2OCrystalline solid + 3MgCl2Ionized 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
297.4
37.17
99.13
per 1 mol of
148.7
per 1 mol of
99.13
per 1 mol of
99.13
per 1 mol of
99.13

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
NaClO (ai)-347.3[1]-298.7[1]100[1]
Mg(OH)2 (cr)-924.54[1]-833.51[1]63.18[1]77.03[1]
Mg(OH)2 (am)
precipitated
-920.5[1]
Mg(OH)2 (g)-561[1]
Mg(OH)2 (ai)-926.84[1]-769.4[1]-159.4[1]
* (ai):Ionized aqueous solution, (cr):Crystalline solid, (am):Amorphous solid, (g):Gas

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
NaClO4 (cr)-383.30[1]-254.85[1]142.3[1]
NaClO4 (ai)-369.45[1]-270.41[1]241.0[1]
NaClO4 (cr)
1 hydrate
-677.77[1]-494.29[1]190.8[1]
Na2O (cr)-414.22[1]-375.46[1]75.06[1]69.12[1]
Na2O (g)-35.6[1]-52.3[1]261.2[1]55.2[1]
MgCl2 (cr)-641.32[1]-591.79[1]89.62[1]71.38[1]
MgCl2 (g)-400.4[1]
MgCl2 (ai)-801.15[1]-717.1[1]-25.1[1]
MgCl2 (cr)
1 hydrate
-966.63[1]-861.74[1]137.2[1]115.27[1]
MgCl2 (cr)
2 hydrate
-1279.72[1]-1118.00[1]179.9[1]159.20[1]
MgCl2 (cr)
4 hydrate
-1898.99[1]-1623.29[1]264.0[1]241.42[1]
MgCl2 (cr)
6 hydrate
-2499.02[1]-2114.64[1]366.1[1]315.06[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, (ai):Ionized aqueous solution, (g):Gas, (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)