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ZnCl2 + BeF2 💧→ ZnF2↓ + BeCl2

The reaction of zinc chloride and beryllium fluoride yields zinc fluoride and beryllium 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
BeF2Beryllium fluoride1
Lewis base
Very soluble in water

Products

Chemical formulaNameCoefficientTypeType in general
equation
ZnF2Zinc fluoride1
Lewis conjugate
Slightly soluble in water
BeCl2Beryllium chloride1
Non-redox product

Thermodynamic changes

Changes in standard condition (1)

Reaction of zinc chloride and beryllium fluoride
ΔrG189.9 kJ/mol
K0.54 × 10−33
pK33.27
ZnCl2Crystalline solid + BeF2Crystalline solidα, quartz
💧
ZnF2Crystalline solid + BeCl2Crystalline solidα
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
187.1189.9−8.457.32
per 1 mol of
187.1189.9−8.457.32
per 1 mol of
187.1189.9−8.457.32
per 1 mol of
187.1189.9−8.457.32
per 1 mol of
187.1189.9−8.457.32

Changes in standard condition (2)

Reaction of zinc chloride and beryllium fluoride
ΔrG186.6 kJ/mol
K0.20 × 10−32
pK32.69
ZnCl2Crystalline solid + BeF2Crystalline solidα, quartz
💧
ZnF2Crystalline solid + BeCl2Crystalline solidβ
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
181.7186.6−15.324.90
per 1 mol of
181.7186.6−15.324.90
per 1 mol of
181.7186.6−15.324.90
per 1 mol of
181.7186.6−15.324.90
per 1 mol of
181.7186.6−15.324.90

Changes in standard condition (3)

Reaction of zinc chloride and beryllium fluoride
ZnCl2Crystalline solid + BeF2Crystalline solidβ, cristobalite
💧
ZnF2Crystalline solid + BeCl2Crystalline solidα
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
184.1
per 1 mol of
184.1
per 1 mol of
184.1
per 1 mol of
184.1
per 1 mol of
184.1

Changes in standard condition (4)

Reaction of zinc chloride and beryllium fluoride
ZnCl2Crystalline solid + BeF2Crystalline solidβ, cristobalite
💧
ZnF2Crystalline solid + BeCl2Crystalline solidβ
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
178.7
per 1 mol of
178.7
per 1 mol of
178.7
per 1 mol of
178.7
per 1 mol of
178.7

Changes in aqueous solution (1)

Reaction of zinc chloride and beryllium fluoride
ZnCl2Ionized aqueous solution + BeF2Aqueous solution
💧
ZnF2Crystalline solid + BeCl2Aqueous 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
53.9
per 1 mol of
53.9
per 1 mol of
53.9
per 1 mol of
53.9
per 1 mol of
53.9

Changes in aqueous solution (2)

Reaction of zinc chloride and beryllium fluoride
ZnCl2Un-ionized aqueous solution + BeF2Aqueous solution
💧
ZnF2Crystalline solid + BeCl2Aqueous 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
per 1 mol of
per 1 mol of
per 1 mol of
per 1 mol of

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]
BeF2 (cr)
α, quartz
-1026.8[1]-979.4[1]53.35[1]51.84[1]
BeF2 (cr)
β, cristobalite
-1023.8[1]
BeF2 (vit)-1022.2[1]
BeF2 (g)-793.7[1]
BeF2 (aq)-1046.0[1]
* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution, (vit):Vitreous liquid, (aq):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
ZnF2 (cr)-764.4[1]-713.3[1]73.68[1]65.65[1]
ZnF2 (ai)-819.14[1]-704.64[1]-139.7[1]-167[1]
BeCl2 (cr)
α
-490.4[1]-445.6[1]82.68[1]64.85[1]
BeCl2 (cr)
β
-495.8[1]-448.9[1]75.81[1]62.43[1]
BeCl2 (g)-358.6[1]
BeCl2 (aq)-715.9[1]
BeCl2 (cr)
4 hydrate
-1808.3[1]
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (g):Gas, (aq):Aqueous solution

References

List of references

  1. 1