Potassium Chromate

K₂CrO₄

IUPAC: Potassium chromate

CAS: 7789-00-6

Übersicht

Potassium chromate is a bright yellow salt used as an indicator in argentometric titrations and as a corrosion inhibitor.

Zusammensetzung

Element	Symbol	Atome	Atommasse
Oxygen	O	4	15,9990
Potassium	K	2	39,0980
Chromium	Cr	1	51,9960

Elementare Zusammensetzung

Oxygen ×4

33,0%

Potassium ×2

40,3%

Chromium ×1

26,8%

Verwendung

• Analytical chemistry indicator
• Corrosion inhibitor
• Leather tanning
• Textile dyeing

Wissenswertes

✦ The Mohr method for chloride determination uses potassium chromate as the indicator

Sicherheit

⚠ Carcinogen (Cr(VI))
⚠ Toxic
⚠ Allergenic

Structure

SMILES

[O-][Cr](=O)(=O)[O-].[K+].[K+]

Eigenschaften

Typ: salt
Zustand: solid
Molmasse: 194,19 g/mol
Dichte: 2,7320 g/cm³
Schmelzpunkt: 968,0 °C
Löslichkeit: 629 g/L at 20°C

Molecular Descriptors

Exact Mass: 193,8476
TPSA: 80,3 Å²
H-Bond Donors: 0
H-Bond Acceptors: 4
Rotatable Bonds: 0
Heavy Atoms: 7
Complexity: 62,0

Frequently Asked Questions

What is Potassium Chromate?

Potassium Chromate (K₂CrO₄) is a salt compound with the IUPAC name Potassium chromate.

What is the molecular weight of Potassium Chromate?

Potassium Chromate has a molar mass of 194.19 g/mol.

What state is Potassium Chromate at room temperature?

Potassium Chromate is a solid at room temperature.

Is Potassium Chromate organic or inorganic?

Potassium Chromate is classified as an inorganic compound.

What elements make up Potassium Chromate?

Potassium Chromate (K₂CrO₄) is composed of Oxygen (O), Potassium (K), Chromium (Cr).