2KClO₄ + (NH₄)₂CrO₄ 💧→ K₂CrO₄↓ + 2NH₄ClO₄

Last updated: June 13, 2022

Reaction of potassium perchlorate and ammonium chromate: 2KClO₄Potassium perchlorate + (NH₄)₂CrO₄Ammonium chromate
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K₂CrO₄↓Potassium chromate + 2NH₄ClO₄Ammonium perchlorate

The reaction of potassium perchlorate and ammonium chromate yields potassium chromate and ammonium perchlorate. 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
KClO₄	Potassium perchlorate	2	Lewis acid	Soluble in water
(NH₄)₂CrO₄	Ammonium chromate	1	Lewis base	Very soluble in water

Chemical formula	Name	Coefficient	Type	Type in general equation
K₂CrO₄	Potassium chromate	1	Lewis conjugate	Insoluble in water
NH₄ClO₄	Ammonium perchlorate	2	Non-redox product	–

Reaction of potassium perchlorate and ammonium chromate: 2KClO₄Crystalline solid + (NH₄)₂CrO₄Crystalline solid
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K₂CrO₄↓Crystalline solid + 2NH₄ClO₄Crystalline 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	38.5	–	–	–
per 1 mol of Potassium perchlorate	19.3	–	–	–
per 1 mol of Ammonium chromate	38.5	–	–	–
per 1 mol of Potassium chromate	38.5	–	–	–
per 1 mol of Ammonium perchlorate	19.3	–	–	–

Reaction of potassium perchlorate and ammonium chromate ◆ Δ_rG −0.02 kJ/mol K 1.01 × 10⁰ pK −0.00: 2KClO₄Ionized aqueous solution + (NH₄)₂CrO₄Ionized aqueous solution
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K₂CrO₄↓Ionized aqueous solution + 2NH₄ClO₄Ionized aqueous solution

	Standard enthalpy of reaction Δ_rH° kJ · mol⁻¹	Standard Gibbs energy of reaction Δ_rG° kJ · mol⁻¹	Standard heat capacity of reaction at constant pressure Δ_rC_p° J · K⁻¹ · mol⁻¹
per 1 mol of Equation	0.01	−0.02	–
per 1 mol of Potassium perchlorate	0.00500	−0.0100	–
per 1 mol of Ammonium chromate	0.0100	−0.0200	–
per 1 mol of Potassium chromate	0.0100	−0.0200	–
per 1 mol of Ammonium perchlorate	0.00500	−0.0100	–

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
KClO₄ (cr)	-432.75^[1]	-303.09^[1]	151.0^[1]	112.38^[1]
KClO₄ (ai)	-381.71^[1]	-291.79^[1]	284.5^[1]	–
(NH₄)₂CrO₄ (cr)	-1167.3^[1]	–	–	–
(NH₄)₂CrO₄ (ai)	-1146.16^[1]	-886.36^[1]	277.0^[1]	–

* (cr):Crystalline solid, (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
K₂CrO₄ (cr)	-1403.7^[1]	-1295.7^[1]	200.12^[1]	145.98^[1]
K₂CrO₄ (ai)	-1385.91^[1]	-1294.30^[1]	255.2^[1]	–
NH₄ClO₄ (cr)	-295.31^[1]	-88.75^[1]	186.2^[1]	–
NH₄ClO₄ (ai)	-261.83^[1]	-87.83^[1]	295.4^[1]	–

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