BaBr₂ + K₂Cr₂O₇ 💧→ BaCrO₄↓ + 2KBr + CrO₃

Last updated: June 13, 2022

Reaction of barium bromide and potassium dichromate: BaBr₂Barium bromide + K₂Cr₂O₇Potassium dichromate
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BaCrO₄↓Barium chromate + 2KBrPotassium bromide + CrO₃Chromium(VI) oxide

The reaction of barium bromide and potassium dichromate yields barium chromate, potassium bromide, and chromium(VI) oxide. This reaction is an acid-base reaction and is classified as follows:

Table of contents

Reaction data

Chemical formula	Name	Coefficient	Type	Type in general equation
BaBr₂	Barium bromide	1	Lewis acid	Very soluble in water
K₂Cr₂O₇	Potassium dichromate	1	Lewis base	Soluble in water

Chemical formula	Name	Coefficient	Type	Type in general equation
BaCrO₄	Barium chromate	1	Lewis conjugate	Insoluble in water
KBr	Potassium bromide	2	Non-redox product	–
CrO₃	Chromium(VI) oxide	1	Non-redox product	–

Reaction of barium bromide and potassium dichromate: BaBr₂Crystalline solid + K₂Cr₂O₇Crystalline solid
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BaCrO₄↓Crystalline solid + 2KBrCrystalline solid + CrO₃Crystalline 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	−4.3	–	–	–
per 1 mol of Barium bromide	−4.3	–	–	–
per 1 mol of Potassium dichromate	−4.3	–	–	–
per 1 mol of Barium chromate	−4.3	–	–	–
per 1 mol of Potassium bromide	−2.1	–	–	–
per 1 mol of Chromium(VI) oxide	−4.3	–	–	–

Reaction of barium bromide and potassium dichromate: BaBr₂Ionized aqueous solution + K₂Cr₂O₇Ionized aqueous solution
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BaCrO₄↓Crystalline solid + 2KBrIonized aqueous solution + CrO₃Crystalline 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	−7.7	–	–	–
per 1 mol of Barium bromide	−7.7	–	–	–
per 1 mol of Potassium dichromate	−7.7	–	–	–
per 1 mol of Barium chromate	−7.7	–	–	–
per 1 mol of Potassium bromide	−3.9	–	–	–
per 1 mol of Chromium(VI) oxide	−7.7	–	–	–

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
BaBr₂ (cr)	-757.3^[1]	-736.8^[1]	146^[1]	–
BaBr₂ (g)	-439^[1]	-473^[1]	331^[1]	61.5^[1]
BaBr₂ (ai)	-780.73^[1]	-768.68^[1]	174.5^[1]	–
BaBr₂ (cr) 1 hydrate	-1068.2^[1]	–	–	–
BaBr₂ (cr) 2 hydrate	-1366.1^[1]	-1230.4^[1]	226^[1]	–
K₂Cr₂O₇ (cr)	-2061.5^[1]	-1881.8^[1]	291.2^[1]	219.24^[1]
K₂Cr₂O₇ (ai)	-1994.9^[1]	-1867.6^[1]	466.9^[1]	–

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

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
BaCrO₄ (cr)	-1446.0^[1]	-1345.22^[1]	158.6^[1]	–
KBr (cr)	-393.798^[1]	-380.66^[1]	95.90^[1]	52.30^[1]
KBr (g)	-180.08^[1]	-212.96^[1]	250.52^[1]	36.920^[1]
KBr (ai)	-373.92^[1]	-387.23^[1]	184.9^[1]	-120.1^[1]
CrO₃ (cr)	-589.5^[1]	–	–	–
CrO₃ (g)	-385.8^[1]	–	–	–

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