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2CsHCO3 🔥→ Cs2CO3 + CO2↑ + H2O

Decomposition of caesium hydrogencarbonate yields caesium carbonate, carbon dioxide, and water (Other reactions are here). 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 reactions
  5. 5Related categories

Reaction data

Chemical equation

General equation

Thermal decomposition without redox
Thermally decomposable substanceLewis conjugate
🔥
ProductLewis acid + ProductLewis base

Oxidation state of each atom

Decomposition of caesium hydrogencarbonate

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
CsHCO3Caesium hydrogencarbonate2
Lewis conjugate
Thermally decomposable

Products

Chemical formulaNameCoefficientTypeType in general
equation
Cs2CO3Caesium carbonate1
Lewis acid
CO2Carbon dioxide1
Lewis acid
H2OWater1
Lewis acid

Thermodynamic changes

Changes in standard condition

Decomposition of caesium hydrogencarbonate
2CsHCO3Crystalline solid
🔥
Cs2CO3Crystalline solid + CO2Gas + H2OLiquid
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
113.2
56.60
per 1 mol of
113.2
per 1 mol of
113.2
per 1 mol of
113.2

Changes in aqueous solution (1)

Decomposition of caesium hydrogencarbonate
ΔrG14.22 kJ/mol
K0.32 × 10−2
pK2.49
2CsHCO3Ionized aqueous solution
🔥
Cs2CO3Ionized aqueous solution + CO2Gas + H2OLiquid
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
27.5014.2244.3
13.757.11022.1
per 1 mol of
27.5014.2244.3
per 1 mol of
27.5014.2244.3
per 1 mol of
27.5014.2244.3

Changes in aqueous solution (2)

Decomposition of caesium hydrogencarbonate
ΔrG22.60 kJ/mol
K0.11 × 10−3
pK3.96
2CsHCO3Ionized aqueous solution
🔥
Cs2CO3Ionized aqueous solution + CO2Un-ionized aqueous solution + H2OLiquid
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
7.2122.60−51.9
3.6011.30−25.9
per 1 mol of
7.2122.60−51.9
per 1 mol of
7.2122.60−51.9
per 1 mol of
7.2122.60−51.9

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
CsHCO3 (cr)-966.1[1]
CsHCO3 (ai)-950.27[1]-878.78[1]224.3[1]
* (cr):Crystalline solid, (ai):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
Cs2CO3 (cr)-1139.7[1]-1054.3[1]204.47[1]123.85[1]
Cs2CO3 (ai)-1193.70[1]-1111.85[1]209.2[1]
Cs2CO3 (cr)
3 hydrate
-2048.1[1]
CO2 (g)-393.509[1]-394.359[1]213.74[1]37.11[1]
CO2 (ao)-413.80[1]-385.98[1]117.6[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, (ao):Un-ionized aqueous solution, (l):Liquid

References

List of references

  1. 1