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4CuSO4 + 2Na[Al(OH)4] 💧→ 4Cu(OH)2↓ + Na2SO4 + Al2(SO4)3

4CuSO₄ + 2Na[Al(OH)₄] 💧→ 4Cu(OH)₂↓ + Na₂SO₄ + Al₂(SO₄)₃

Last updated: June 13, 2022

Reaction of copper(II) sulfate and sodium tetrahydroxydoaluminate: 4CuSO₄Copper(II) sulfate + 2Na[Al(OH)₄]Sodium tetrahydroxydoaluminate
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4Cu(OH)₂↓Copper(II) hydroxide + Na₂SO₄Sodium sulfate + Al₂(SO₄)₃Aluminium sulfate

The reaction of copper(II) sulfate and sodium tetrahydroxydoaluminate yields copper(II) hydroxide, sodium sulfate, and aluminium sulfate (Other reactions are here). This reaction is an acid-base reaction and is classified as follows:

Precipitation reaction

Table of contents

Reaction data

Chemical equation

Reaction of copper(II) sulfate and sodium tetrahydroxydoaluminate: 4CuSO₄Copper(II) sulfate + 2Na[Al(OH)₄]Sodium tetrahydroxydoaluminate
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4Cu(OH)₂↓Copper(II) hydroxide + Na₂SO₄Sodium sulfate + Al₂(SO₄)₃Aluminium sulfate

General equation

Precipitation reaction: Miscible with water/Very soluble in water/Soluble in waterLewis acid + Miscible with water/Very soluble in water/Soluble in waterLewis base
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Insoluble in water/Very slightly soluble in water/Slightly soluble in waterLewis conjugate + Product(Non-redox product)

Oxidation state of each atom

Reaction of copper(II) sulfate and sodium tetrahydroxydoaluminate

Reactants

Chemical formula	Name	Coefficient	Type	Type in general equation
CuSO₄	Copper(II) sulfate	4	Lewis acid	Soluble in water
Na[Al(OH)₄]	Sodium tetrahydroxydoaluminate	2	Lewis base	Very soluble in water

Products

Chemical formula	Name	Coefficient	Type	Type in general equation
Cu(OH)₂	Copper(II) hydroxide	4	Lewis conjugate	Insoluble in water
Na₂SO₄	Sodium sulfate	1	Non-redox product	–
Al₂(SO₄)₃	Aluminium sulfate	1	Non-redox product	–

Thermodynamic changes

Changes in standard condition (1)

Reaction of copper(II) sulfate and sodium tetrahydroxydoaluminate: 4CuSO₄Un-ionized aqueous solution + 2Na[Al(OH)₄]Ionized aqueous solution
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4Cu(OH)₂↓Ionized aqueous solution + Na₂SO₄Ionized aqueous solution + Al₂(SO₄)₃Aqueous 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	–	–	–	–
per 1 mol of Copper(II) sulfate	–	–	–	–
per 1 mol of Sodium tetrahydroxydoaluminate	–	–	–	–
per 1 mol of Copper(II) hydroxide	–	–	–	–
per 1 mol of Sodium sulfate	–	–	–	–
per 1 mol of Aluminium sulfate	–	–	–	–

Changes in standard condition (2)

Reaction of copper(II) sulfate and sodium tetrahydroxydoaluminate ◆ Δ_rG 434 kJ/mol K 0.93 × 10⁻⁷⁶ pK 76.03: 4CuSO₄Un-ionized aqueous solution + 2Na[Al(OH)₄]Ionized aqueous solution
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4Cu(OH)₂↓Ionized aqueous solution + Na₂SO₄Ionized aqueous solution + Al₂(SO₄)₃Ionized 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	–	434	–	–
per 1 mol of Copper(II) sulfate	–	109	–	–
per 1 mol of Sodium tetrahydroxydoaluminate	–	217	–	–
per 1 mol of Copper(II) hydroxide	–	109	–	–
per 1 mol of Sodium sulfate	–	434	–	–
per 1 mol of Aluminium sulfate	–	434	–	–

Changes in standard condition (3)

Reaction of copper(II) sulfate and sodium tetrahydroxydoaluminate: 4CuSO₄Crystalline solid + 2Na[Al(OH)₄]Ionized aqueous solution
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4Cu(OH)₂↓Ionized aqueous solution + Na₂SO₄Ionized aqueous solution + Al₂(SO₄)₃Aqueous 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	−174.6	–	–	–
per 1 mol of Copper(II) sulfate	−43.65	–	–	–
per 1 mol of Sodium tetrahydroxydoaluminate	−87.30	–	–	–
per 1 mol of Copper(II) hydroxide	−43.65	–	–	–
per 1 mol of Sodium sulfate	−174.6	–	–	–
per 1 mol of Aluminium sulfate	−174.6	–	–	–

Changes in standard condition (4)

Reaction of copper(II) sulfate and sodium tetrahydroxydoaluminate ◆ Δ_rG 312 kJ/mol K 0.22 × 10⁻⁵⁴ pK 54.66: 4CuSO₄Crystalline solid + 2Na[Al(OH)₄]Ionized aqueous solution
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4Cu(OH)₂↓Ionized aqueous solution + Na₂SO₄Ionized aqueous solution + Al₂(SO₄)₃Ionized 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	−191	312	−1689	–
per 1 mol of Copper(II) sulfate	−47.8	78.0	−422.3	–
per 1 mol of Sodium tetrahydroxydoaluminate	−95.5	156	−844.5	–
per 1 mol of Copper(II) hydroxide	−47.8	78.0	−422.3	–
per 1 mol of Sodium sulfate	−191	312	−1689	–
per 1 mol of Aluminium sulfate	−191	312	−1689	–

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
CuSO₄ (cr)	-771.36^[1]	-661.8^[1]	109^[1]	100.0^[1]
CuSO₄ (ai)	-844.50^[1]	-679.04^[1]	-79.5^[1]	–
CuSO₄ (ao)	–	-692.18^[1]	–	–
CuSO₄ (cr) 1 hydrate	-1085.83^[1]	-918.11^[1]	146.0^[1]	134^[1]
CuSO₄ (cr) 3 hydrate	-1684.31^[1]	-1399.96^[1]	221.3^[1]	205^[1]
CuSO₄ (cr) 5 hydrate	-2279.65^[1]	-1879.745^[1]	300.4^[1]	280^[1]
Na[Al(OH)₄] (ai)	-1742.6^[1]	-1567.2^[1]	161.9^[1]	–

* (cr):Crystalline solid, (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
Cu(OH)₂ (cr)	-449.8^[1]	–	–	–
Cu(OH)₂ (ai)	-395.22^[1]	-249.01^[1]	-120.9^[1]	–
Na₂SO₄ (cr) orthorhombic	-1387.08^[1]	-1270.16^[1]	149.58^[1]	128.20^[1]
Na₂SO₄ (cr) metastable	–	–	154.934^[1]	129.29^[1]
Na₂SO₄ (ai)	-1389.51^[1]	-1268.36^[1]	138.1^[1]	-201^[1]
Na₂SO₄ (cr) 10 hydrate	-4327.26^[1]	-3646.85^[1]	592.0^[1]	–
Al₂(SO₄)₃ (cr)	-3440.84^[1]	-3099.94^[1]	239.3^[1]	259.41^[1]
Al₂(SO₄)₃ (ai)	-3791^[1]	-3205^[1]	-583.2^[1]	–
Al₂(SO₄)₃ (aq)	-3774.8^[1]	–	–	–
Al₂(SO₄)₃ (cr) 6 hydrate	-5311.71^[1]	-4622.08^[1]	469.0^[1]	492.9^[1]
Al₂(SO₄)₃ (cr) 18 hydrate	-8878.9^[1]	–	–	–

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