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3S + 6LiOH → Li2SO3 + 2Li2S + 3H2O

The reaction of sulfur and lithium hydroxide yields lithium sulfite, lithium sulfide, 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
Reaction of nonmetal and hydroxide base
NonmetalSelf redox agent + Hydroxide base
Oxoacid saltOxidation product + Salt of hydracid/HydrideReduction product + OxideNon-redox product

Oxidation state of each atom

Reaction of sulfur and lithium hydroxide

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
SSulfur3
Self redoxing
Nonmetal
LiOHLithium hydroxide6
Base
Hydroxide base

Products

Chemical formulaNameCoefficientTypeType in general
equation
Li2SO3Lithium sulfite1
Oxidized
Oxoacid salt
Li2SLithium sulfide2
Reduced
Salt of hydracid
H2OWater3
Hydride

Thermodynamic changes

Changes in standard condition (1)

Reaction of sulfur and lithium hydroxide
3SCrystalline solidrhombic + 6LiOHCrystalline solid
Li2SO3Crystalline solid + 2Li2SCrystalline solid + 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
−7.7
per 1 mol of
−2.6
per 1 mol of
−1.3
per 1 mol of
−7.7
per 1 mol of
−3.9
per 1 mol of
−2.6

Changes in standard condition (2)

Reaction of sulfur and lithium hydroxide
3SCrystalline solidmonoclinic + 6LiOHCrystalline solid
Li2SO3Crystalline solid + 2Li2SCrystalline solid + 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
−8.7
per 1 mol of
−2.9
per 1 mol of
−1.4
per 1 mol of
−8.7
per 1 mol of
−4.3
per 1 mol of
−2.9

Changes in aqueous solution (1)

Reaction of sulfur and lithium hydroxide
3SCrystalline solidrhombic + 6LiOHIonized aqueous solution
Li2SO3Crystalline solid + 2Li2SCrystalline solid + 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
133.6
per 1 mol of
44.53
per 1 mol of
22.27
per 1 mol of
133.6
per 1 mol of
66.80
per 1 mol of
44.53

Changes in aqueous solution (2)

Reaction of sulfur and lithium hydroxide
3SCrystalline solidrhombic + 6LiOHUn-ionized aqueous solution
Li2SO3Crystalline solid + 2Li2SCrystalline solid + 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
133.1
per 1 mol of
44.37
per 1 mol of
22.18
per 1 mol of
133.1
per 1 mol of
66.55
per 1 mol of
44.37

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
S (cr)
rhombic
0[1]0[1]31.80[1]22.64[1]
S (cr)
monoclinic
0.33[1]
S (g)278.805[1]238.250[1]167.821[1]23.673[1]
LiOH (cr)-484.93[1]-438.95[1]42.80[1]49.66[1]
LiOH (g)-238.1[1]-242.3[1]210.90[1]46.02[1]
LiOH (ai)-508.48[1]-450.58[1]2.80[1]-79.9[1]
LiOH (ao)-508.4[1]-451.8[1]7.1[1]
LiOH (cr)
1 hydrate
-788.01[1]-680.95[1]71.21[1]79.50[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
Li2SO3 (cr)-1177.0[1]
Li2S (cr)-441.4[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, (l):Liquid, (g):Gas

References

List of references

  1. 1