Potassium hypochromate

Potassium hypochromate
Names
	Other names Potassium chromate(V);
Identifiers
3D model (JSmol)	Interactive image;
	SMILES O=[Cr-3](=O)(=O)=O.[K+].[K+].[K+];
Properties
Chemical formula	K3CrO4
Molar mass	233.2886 g/mol
Appearance	Green solid
Melting point	1,000 °C (1,830 °F; 1,270 K) (decomposes)
Solubility in water	Soluble, decomposes (25 °C)
Structure
Crystal structure	Similar to potassium hypomanganate
Thermochemistry
Std enthalpy of; formation (ΔfH⦵298)	−370 ± 2 kcal mol−1
Hazards
Flash point	Not flammable
Related compounds
Other anions	Potassium hypomanganate
Other cations	Sodium hypochromate
Related chromates	Potassium chromate; Potassium perchromate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Potassium hypochromate is a chemical compound with the formula K₃CrO₄ with the unusual Cr⁵⁺ ion. This compound is unstable in water but stable in alkaline solution and was found to have a similar crystal structure to potassium hypomanganate.

Names

Other names Potassium chromate(V)
Identifiers
3D model (JSmol)	Interactive image
SMILES O=[Cr-3](=O)(=O)=O.[K+].[K+].[K+]
Properties
Chemical formula	K₃CrO₄
Molar mass	233.2886 g/mol
Appearance	Green solid
Melting point	1,000 °C (1,830 °F; 1,270 K) (decomposes)
Solubility in water	Soluble, decomposes (25 °C)
Structure
Crystal structure	Similar to potassium hypomanganate
Thermochemistry
Std enthalpy of formation (Δ_fH^⦵₂₉₈)	−370 ± 2 kcal mol⁻¹
Hazards
Flash point	Not flammable
Related compounds
Other anions	Potassium hypomanganate
Other cations	Sodium hypochromate
Related chromates	Potassium chromate Potassium perchromate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references