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chromium trioxide

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Identification
Molecular formula
CrO3
CAS number
1333-82-0
IUPAC name
dichromic;dioxido(dioxo)chromium
State
State

Chromium trioxide is typically found in a solid state at room temperature, often in the form of dark red or brownish red crystals. It is a strong oxidizing agent and very hygroscopic, turning into a syrupy liquid upon absorbing moisture from the air.

Melting point (Celsius)
197.00
Melting point (Kelvin)
470.15
Boiling point (Celsius)
250.00
Boiling point (Kelvin)
523.15
General information
Molecular weight
99.99g/mol
Molar mass
99.9940g/mol
Density
2.7000g/cm3
Appearence

Chromium trioxide appears as dark red or brownish red crystals with a high brilliance, depending on the crystal structure present. This compound can also occasionally appear as a purplish-black solid.

Comment on solubility

Solubility of Dioxido(dioxo)chromium (Dichromic Acid)

Dioxido(dioxo)chromium, commonly known as dichromic acid, presents some interesting characteristics when it comes to its solubility. This compound is known to have varying degrees of solubility in different solvents.

Key Points About Solubility:

  • Water Solubility: Dioxido(dioxo)chromium is moderately soluble in water, with its solubility being influenced by factors such as pH and temperature.
  • Solvent Preference: It is more soluble in acidic solutions, where it can effectively dissociate, enhancing its overall solubility.
  • Stability in Solution: When dissolved in water, it tends to form soluble chromate ions, increasing its availability in aqueous environments.
  • Temperature Effects: Like many compounds, increased temperature generally improves solubility, enabling greater interaction with solvents.

Importantly, the solubility of dioxido(dioxo)chromium can play a crucial role in its applications, as higher solubility facilitates its reactivity in various chemical processes. As with many transition metal oxides, the nuances of solubility can significantly affect the behavior and applications of this compound in both industrial and laboratory settings.

Interesting facts

Interesting Facts about Dichromic Acid (Dioxido(dioxo)chromium)

Dichromic acid, also known as dioxido(dioxo)chromium, is a fascinating compound that plays a significant role in the world of chemistry. Here are some interesting aspects of this compound:

  • Oxidizing Agent: Dichromic acid is recognized for its strong oxidizing properties, making it a valuable reagent in various chemical reactions.
  • Chromium Chemistry: As a chromium-based compound, it provides insights into the diverse oxidation states of chromium. This is particularly relevant in environmental chemistry and industrial applications.
  • Industrial Applications: It is commonly employed in the production of chromium salts and is instrumental in processes such as metal finishing and dyeing.
  • Environmental Impact: Due to its toxic nature, it is critical to handle dichromic acid with caution. It is associated with environmental concerns, particularly in soil and water contamination.
  • Historical Significance: Dichromic acid has a rich history in chemistry and has contributed to the understanding of oxidation-reduction reactions.

As a student or enthusiast of chemistry, grasping the implications of working with dichromic acid enhances your awareness of both its utility and the necessary safety precautions. Always remember:

"With great power comes great responsibility."

Understanding compounds like dichromic acid exemplifies the balance between harnessing chemical properties and ensuring safe practices in the laboratory and beyond.

Synonyms
Chromic chromate
Dichromium tris(chromate)
Chromium chromate, Cr2(CrO4)3
H8I9RSM881
CHROMIC ACID, CHROMIUM(3+) SALT
RefChem:1081509
246-356-2
Chromium(III) chromate
chromium(3+);dioxido(dioxo)chromium
Chromic acid (H2CrO4), chromium(3+) salt (3:2)
CCRIS 158
HSDB 2961
EINECS 246-356-2
Chromic acid, chromium (3+) salt (3:2)
SCHEMBL33534
DTXSID10894154
Chromium chromate (Cr2(CrO4)3)
NS00113216
EC 246-356-2
CHROMIC ACID, CHROMIUM(3+) SALT [HSDB]
Q1087509