Dicromato de potasio

K₂Cr₂O₇

IUPAC: Potassium dichromate

CAS: 7778-50-9

Descripción general

Potassium dichromate is a bright orange crystalline oxidizing agent used in analytical chemistry and industrial processes.

Composición

Elemento Símbolo Átomos Masa atómica
Oxígeno O 7 15,9990
Potasio K 2 39,0980
Cromo Cr 2 51,9960

Composición elemental

O
38,1%
K
26,6%
Cr
35,3%

Usos

  • Chrome plating
  • Leather tanning
  • Analytical chemistry (COD test)
  • Photography

Datos curiosos

  • K₂Cr₂O₇ was once used in breathalyzer tests — it changes from orange to green in the presence of alcohol

Seguridad

  • ⚠ Carcinogen (Cr⁶⁺)
  • ⚠ Highly toxic
  • ⚠ Strong oxidizer
  • ⚠ Environmental pollutant

Estructura

SMILES

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

Propiedades

Tipo
industrial
Estado
solid
Masa molar
294,19 g/mol
Densidad
2,6800 g/cm³
Punto de fusión
398,0 °C
Punto de ebullición
500,0 °C
Solubilidad
125 g/L at 20°C

Descriptores moleculares

Masa exacta
293,7728
TPSA
124,0 Ų
Donadores de enlace de hidrógeno
0
Aceptores de enlace de hidrógeno
7
Enlaces rotables
0
Átomos pesados
11
Complejidad
194,0

Frequently Asked Questions

What is Dicromato de potasio?
Dicromato de potasio (K₂Cr₂O₇) is a industrial compound with the IUPAC name Potassium dichromate.
What is the molecular weight of Dicromato de potasio?
Dicromato de potasio has a molar mass of 294.19 g/mol.
What state is Dicromato de potasio at room temperature?
Dicromato de potasio is a solid at room temperature.
Is Dicromato de potasio organic or inorganic?
Dicromato de potasio is classified as an inorganic compound.
What elements make up Dicromato de potasio?
Dicromato de potasio (K₂Cr₂O₇) is composed of Oxígeno (O), Potasio (K), Cromo (Cr).