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BaO + 2NaHSO4 💧→ BaSO4↓ + Na2SO4 + H2O

BaO + 2NaHSO₄ 💧→ BaSO₄↓ + Na₂SO₄ + H₂O

Last updated: June 13, 2022

Reaction of barium oxide and sodium hydrogensulfate: BaOBarium oxide + 2NaHSO₄Sodium hydrogensulfate
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BaSO₄↓Barium sulfate + Na₂SO₄Sodium sulfate + H₂OWater

The reaction of barium oxide and sodium hydrogensulfate yields barium sulfate, sodium sulfate, and water (Other reactions are here). 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
BaO	Barium oxide	1	Lewis acid	Soluble in water
NaHSO₄	Sodium hydrogensulfate	2	Lewis base	Very soluble in water

Products

Chemical formula	Name	Coefficient	Type	Type in general equation
BaSO₄	Barium sulfate	1	Lewis conjugate	Insoluble in water
Na₂SO₄	Sodium sulfate	1	Non-redox product	–
H₂O	Water	1	Non-redox product	–

Thermodynamic changes

Changes in standard condition (1)

Reaction of barium oxide and sodium hydrogensulfate ◆ Δ_rG −358.8 kJ/mol K 7.23 × 10⁶² pK −62.86: BaOCrystalline solid + 2NaHSO₄Crystalline solid
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BaSO₄↓Crystalline solid + Na₂SO₄Crystalline solidorthorhombic + H₂OLiquid

	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	−341.6	−358.8	55.3	–
per 1 mol of Barium oxide	−341.6	−358.8	55.3	–
per 1 mol of Sodium hydrogensulfate	−170.8	−179.4	27.6	–
per 1 mol of Barium sulfate	−341.6	−358.8	55.3	–
per 1 mol of Sodium sulfate	−341.6	−358.8	55.3	–
per 1 mol of Water	−341.6	−358.8	55.3	–

Changes in standard condition (2)

Reaction of barium oxide and sodium hydrogensulfate: BaOCrystalline solid + 2NaHSO₄Crystalline solid
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BaSO₄↓Crystalline solid + Na₂SO₄Crystalline solidmetastable + H₂OLiquid

	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	–	–	60.6	–
per 1 mol of Barium oxide	–	–	60.6	–
per 1 mol of Sodium hydrogensulfate	–	–	30.3	–
per 1 mol of Barium sulfate	–	–	60.6	–
per 1 mol of Sodium sulfate	–	–	60.6	–
per 1 mol of Water	–	–	60.6	–

Changes in standard condition (3)

Reaction of barium oxide and sodium hydrogensulfate: BaOCrystalline solid + 2NaHSO₄Crystalline solid
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BaSO₄↓Crystalline solidprecipitated + Na₂SO₄Crystalline solidorthorhombic + H₂OLiquid

	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	−334.9	–	–	–
per 1 mol of Barium oxide	−334.9	–	–	–
per 1 mol of Sodium hydrogensulfate	−167.4	–	–	–
per 1 mol of Barium sulfate	−334.9	–	–	–
per 1 mol of Sodium sulfate	−334.9	–	–	–
per 1 mol of Water	−334.9	–	–	–

Changes in standard condition (4)

Reaction of barium oxide and sodium hydrogensulfate: BaOCrystalline solid + 2NaHSO₄Crystalline solid
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⟶
BaSO₄↓Crystalline solidprecipitated + Na₂SO₄Crystalline solidmetastable + H₂OLiquid

	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 Barium oxide	–	–	–	–
per 1 mol of Sodium hydrogensulfate	–	–	–	–
per 1 mol of Barium sulfate	–	–	–	–
per 1 mol of Sodium sulfate	–	–	–	–
per 1 mol of Water	–	–	–	–

Changes in aqueous solution

Reaction of barium oxide and sodium hydrogensulfate ◆ Δ_rG −250.1 kJ/mol K 6.54 × 10⁴³ pK −43.82: BaOCrystalline solid + 2NaHSO₄Ionized aqueous solution
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BaSO₄↓Ionized aqueous solution + Na₂SO₄Ionized aqueous solution + H₂OLiquid

	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	988.4	−250.1	−214.3	–
per 1 mol of Barium oxide	988.4	−250.1	−214.3	–
per 1 mol of Sodium hydrogensulfate	494.2	−125.0	−107.2	–
per 1 mol of Barium sulfate	988.4	−250.1	−214.3	–
per 1 mol of Sodium sulfate	988.4	−250.1	−214.3	–
per 1 mol of Water	988.4	−250.1	−214.3	–

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
BaO (cr)	-553.5^[1]	-525.1^[1]	70.42^[1]	47.78^[1]
BaO (g)	-117^[1]	–	–	33.1^[1]
NaHSO₄ (cr)	-1125.5^[1]	-992.8^[1]	113.0^[1]	–
NaHSO₄ (ai)	-1127.46^[1]	-1017.80^[1]	190.8^[1]	-38^[1]
NaHSO₄ (cr) 1 hydrate	-1421.7^[1]	-1231.6^[1]	155^[1]	–

* (cr):Crystalline solid, (g):Gas, (ai):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
BaSO₄ (cr)	-1473.2^[1]	-1362.2^[1]	132.2^[1]	101.75^[1]
BaSO₄ (cr) precipitated	-1466.5^[1]	–	–	–
BaSO₄ (ai)	-144.691^[1]	-1305.30^[1]	29.7^[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]	–
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, (l):Liquid, (g):Gas

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	−358.8 kJ/mol
K	7.23 × 10⁶²
pK	−62.86

Δ_rG	−250.1 kJ/mol
K	6.54 × 10⁴³
pK	−43.82

BaO + 2NaHSO4 💧→ BaSO4↓ + Na2SO4 + H2O

Reaction data

Chemical equation

General equation

Oxidation state of each atom