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Chemical reactions
FeCl2 + Li2CO3 💧→ FeCO3↓ + 2LiCl

FeCl₂ + Li₂CO₃ 💧→ FeCO₃↓ + 2LiCl

Last updated: June 13, 2022

Reaction of iron(II) chloride and lithium carbonate: FeCl₂Iron(II) chloride + Li₂CO₃Lithium carbonate
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FeCO₃↓Iron(II) carbonate + 2LiClLithium chloride

The reaction of iron(II) chloride and lithium carbonate yields iron(II) carbonate and lithium chloride. This reaction is an acid-base reaction and is classified as follows:

Precipitation reaction

Table of contents

Reaction data

Reactants

Chemical formula	Name	Coefficient	Type	Type in general equation
FeCl₂	Iron(II) chloride	1	Lewis acid	Very soluble in water
Li₂CO₃	Lithium carbonate	1	Lewis base	Soluble in water

Products

Chemical formula	Name	Coefficient	Type	Type in general equation
FeCO₃	Iron(II) carbonate	1	Lewis conjugate	Very slightly soluble in water
LiCl	Lithium chloride	2	Non-redox product	–

Thermodynamic changes

Changes in standard condition

Reaction of iron(II) chloride and lithium carbonate ◆ Δ_rG −1.05 kJ/mol K 1.53 × 10⁰ pK −0.18: FeCl₂Crystalline solid + Li₂CO₃Crystalline solid
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FeCO₃↓Crystalline solidsiderite + 2LiClCrystalline solid

	Standard enthalpy of reaction Δ_rH° kJ · mol⁻¹	Standard Gibbs energy of reaction Δ_rG° kJ · mol⁻¹	Standard entropy of reaction Δ_rS° J · K⁻¹ · mol⁻¹	Standard heat capacity of reaction at constant pressure Δ_rC_p° J · K⁻¹ · mol⁻¹
per 1 mol of Equation	−0.1	−1.05	3.2	2.34
per 1 mol of Iron(II) chloride	−0.10	−1.05	3.2	2.34
per 1 mol of Lithium carbonate	−0.10	−1.05	3.2	2.34
per 1 mol of Iron(II) carbonate	−0.10	−1.05	3.2	2.34
per 1 mol of Lithium chloride	−0.050	−0.525	1.6	1.17

Changes in aqueous solution (1)

Reaction of iron(II) chloride and lithium carbonate ◆ Δ_rG −104.7 kJ/mol K 2.20 × 10¹⁸ pK −18.34: FeCl₂Un-ionized aqueous solution + Li₂CO₃Crystalline solid
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FeCO₃↓Crystalline solidsiderite + 2LiClIonized aqueous solution

	Standard enthalpy of reaction Δ_rH° kJ · mol⁻¹	Standard Gibbs energy of reaction Δ_rG° kJ · mol⁻¹	Standard entropy of reaction Δ_rS° J · K⁻¹ · mol⁻¹	Standard heat capacity of reaction at constant pressure Δ_rC_p° J · K⁻¹ · mol⁻¹
per 1 mol of Equation	–	−104.7	–	–
per 1 mol of Iron(II) chloride	–	−104.7	–	–
per 1 mol of Lithium carbonate	–	−104.7	–	–
per 1 mol of Iron(II) carbonate	–	−104.7	–	–
per 1 mol of Lithium chloride	–	−52.35	–	–

Changes in aqueous solution (2)

Reaction of iron(II) chloride and lithium carbonate ◆ Δ_rG −42.43 kJ/mol K 2.71 × 10⁷ pK −7.43: FeCl₂Ionized aqueous solution + Li₂CO₃Crystalline solid
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FeCO₃↓Crystalline solidsiderite + 2LiClIonized aqueous solution

	Standard enthalpy of reaction Δ_rH° kJ · mol⁻¹	Standard Gibbs energy of reaction Δ_rG° kJ · mol⁻¹	Standard entropy of reaction Δ_rS° J · K⁻¹ · mol⁻¹	Standard heat capacity of reaction at constant pressure Δ_rC_p° J · K⁻¹ · mol⁻¹
per 1 mol of Equation	7.5	−42.43	167.0	–
per 1 mol of Iron(II) chloride	7.5	−42.43	167.0	–
per 1 mol of Lithium carbonate	7.5	−42.43	167.0	–
per 1 mol of Iron(II) carbonate	7.5	−42.43	167.0	–
per 1 mol of Lithium chloride	3.8	−21.21	83.50	–

Thermodynamic data of reactants

Chemical formula	Standard enthalpy of formation Δ_fH° kJ · mol⁻¹	Standard Gibbs energy of formation Δ_fG° kJ · mol⁻¹	Standard molar entropy S° J · K⁻¹ · mol⁻¹	Standard molar heat capacity at constant pressure C_p° J · K⁻¹ · mol⁻¹
FeCl₂ (cr)	-341.79^[1]	-302.30^[1]	117.95^[1]	76.65^[1]
FeCl₂ (g)	-148.5^[1]	–	–	–
FeCl₂ (ai)	-423.4^[1]	-341.34^[1]	-24.7^[1]	–
FeCl₂ (ao)	–	-279.1^[1]	–	–
FeCl₂ (cr) 2 hydrate	-953.1^[1]	–	–	–
FeCl₂ (cr) 4 hydrate	-1549.3^[1]	–	–	–
Li₂CO₃ (cr)	-1215.9^[1]	-1132.06^[1]	90.37^[1]	99.12^[1]
Li₂CO₃ (ai)	-1234.11^[1]	-1114.6^[1]	-29.7^[1]	–

* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution

Thermodynamic data of products

Chemical formula	Standard enthalpy of formation Δ_fH° kJ · mol⁻¹	Standard Gibbs energy of formation Δ_fG° kJ · mol⁻¹	Standard molar entropy S° J · K⁻¹ · mol⁻¹	Standard molar heat capacity at constant pressure C_p° J · K⁻¹ · mol⁻¹
FeCO₃ (cr) siderite	-740.57^[1]	-666.67^[1]	92.9^[1]	82.13^[1]
LiCl (cr)	-408.61^[1]	-384.37^[1]	59.33^[1]	47.99^[1]
LiCl (g)	-195.4^[1]	-216.7^[1]	212.824^[1]	33.22^[1]
LiCl (ai)	-445.64^[1]	-424.58^[1]	69.9^[1]	-67.8^[1]
LiCl (cr) 1 hydrate	-712.58^[1]	-631.80^[1]	102.84^[1]	–
LiCl (cr) 2 hydrate	-1012.65^[1]	–	–	–
LiCl (cr) 3 hydrate	-1311.3^[1]	–	–	–

* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution

References

List of references

1
Janiel J. Reed (1989)
The NBS Tables of Chemical Thermodynamic Properties: Selected Values for Inorganic and C1 and C2 Organic Substances in SI Units
https://doi.org/10.18434/M32124
National Institute of Standards and Technology (NIST)
Citation list

Δ_rG	−1.05 kJ/mol
K	1.53 × 10⁰
pK	−0.18

Δ_rG	−104.7 kJ/mol
K	2.20 × 10¹⁸
pK	−18.34

Δ_rG	−42.43 kJ/mol
K	2.71 × 10⁷
pK	−7.43

FeCl2 + Li2CO3 💧→ FeCO3↓ + 2LiCl

Reaction data

Chemical equation

General equation

Oxidation state of each atom