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Ca2+ + SeO42− → CaSeO4

Reaction of calcium ion and selenate ion
Ca2+Calcium ion + SeO42−Selenate ion
CaSeO4Calcium selenate

The reaction of calcium ion and selenate ion yields calcium selenate. 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

Reaction of calcium ion and selenate ion
Ca2+Calcium ion + SeO42−Selenate ion
CaSeO4Calcium selenate

General equation

Reaction of cation and anion
CationLewis acid + AnionLewis base
ProductLewis conjugate + (H2O)

Oxidation state of each atom

Reaction of calcium ion and selenate ion

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
Ca2+Calcium ion1
Lewis acid
Cation
SeO42−Selenate ion1
Lewis base
Anion

Products

Chemical formulaNameCoefficientTypeType in general
equation
CaSeO4Calcium selenate1
Lewis conjugate

Thermodynamic changes

Changes in standard condition

Reaction of calcium ion and selenate ion
Ca2+Un-ionized aqueous solution + SeO42−Un-ionized aqueous solution
CaSeO4Crystalline 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
32.1
per 1 mol of
Calcium ion
32.1
per 1 mol of
Selenate ion
32.1
per 1 mol of
32.1

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
Ca2+ (g)1925.90[1]
Ca2+ (ao)-542.83[1]-553.58[1]-53.1[1]
SeO42− (ao)-599.1[1]-441.3[1]54.0[1]
* (g):Gas, (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
CaSeO4 (cr)-1109.81[1]
CaSeO4 (cr)
2 hydrate
-1706.7[1]-1486.8[1]222[1]
* (cr):Crystalline solid

References

List of references

  1. 1