Potassium Chromate

K₂CrO₄

IUPAC: Potassium chromate

CAS: 7789-00-6

Overview

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

Composition

Element	Symbol	Atoms	Atomic Mass
Oxygen	O	4	15.9990
Potassium	K	2	39.0980
Chromium	Cr	1	51.9960

Elemental Composition

Oxygen ×4

33.0%

Potassium ×2

40.3%

Chromium ×1

26.8%

Uses

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

Fun Facts

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

Safety

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

Structure

SMILES

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

Properties

Type: salt
State: solid
Molar Mass: 194.19 g/mol
Density: 2.7320 g/cm³
Melting Point: 968.0 °C
Solubility: 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

Related Compounds

Ammonium Bicarbonate

NH₄HCO₃

Ammonium Chloride

NH₄Cl

Ammonium Sulfate

(NH₄)₂SO₄

Barium Carbonate

BaCO₃

Barium Chloride

BaCl₂

Barium Sulfate

BaSO₄

Cadmium Sulfide

CdS

Calcium Acetate

Ca(C₂H₃O₂)₂

Calcium Carbonate

CaCO₃

Calcium Citrate

Ca₃(C₆H₅O₇)₂

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).