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ZnCl2 + Rb2S 💧→ ZnS↓ + 2RbCl

The reaction of zinc chloride and rubidium sulfide yields zinc sulfide and rubidium chloride. 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 categories

Reaction data

Chemical equation

General equation

Oxidation state of each atom

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
ZnCl2Zinc chloride1
Lewis acid
Very soluble in water
Rb2SRubidium sulfide1
Lewis base
Very soluble in water

Products

Chemical formulaNameCoefficientTypeType in general
equation
ZnSZinc sulfide1
Lewis conjugate
Insoluble in water
RbClRubidium chloride2
Non-redox product

Thermodynamic changes

Changes in standard condition

Reaction of zinc chloride and rubidium sulfide
ZnCl2Crystalline solid + Rb2SCrystalline solid
💧
ZnSCrystalline solid + 2RbClCrystalline solid
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
−300.9
per 1 mol of
−300.9
per 1 mol of
−300.9
per 1 mol of
−300.9
per 1 mol of
−150.4

Changes in aqueous solution (1)

Reaction of zinc chloride and rubidium sulfide
ΔrG−140.2 kJ/mol
K3.65 × 1024
pK−24.56
ZnCl2Ionized aqueous solution + Rb2SIonized aqueous solution
💧
ZnSCrystalline solid + 2RbClIonized 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
−85.0−140.2184.5
per 1 mol of
−85.0−140.2184.5
per 1 mol of
−85.0−140.2184.5
per 1 mol of
−85.0−140.2184.5
per 1 mol of
−42.5−70.1092.25

Changes in aqueous solution (2)

Reaction of zinc chloride and rubidium sulfide
ΔrG−146.0 kJ/mol
K3.79 × 1025
pK−25.58
ZnCl2Un-ionized aqueous solution + Rb2SIonized aqueous solution
💧
ZnSCrystalline solid + 2RbClIonized 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
−146.0
per 1 mol of
−146.0
per 1 mol of
−146.0
per 1 mol of
−146.0
per 1 mol of
−73.00

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
ZnCl2 (cr)-415.05[1]-369.398[1]111.46[1]71.34[1]
ZnCl2 (g)-266.1[1]
ZnCl2 (ai)-488.19[1]-409.50[1]0.8[1]-226[1]
ZnCl2 (ao)-403.7[1]
Rb2S (cr)-360.7[1]
Rb2S (ai)-469.4[1]-482.0[1]228.4[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
ZnS (cr)-205.98[1]-201.29[1]57.7[1]46.0[1]
RbCl (cr)-435.35[1]-407.80[1]95.90[1]52.38[1]
RbCl (g)-228.9[1]-247.3[1]249.56[1]36.82[1]
RbCl (ai)-418.32[1]-415.20[1]177.99[1]
* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution

References

List of references

  1. 1