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Chromic acid

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Identification
Molecular formula
H2CrO4
CAS number
7738-94-5
IUPAC name
hydroxy-(hydroxy(dioxo)chromio)oxy-dioxo-chromium
State
State

At room temperature, chromic acid is typically found in a solid state as crystals or flakes. However, it is often used in aqueous solution where it is highly acidic.

Melting point (Celsius)
197.00
Melting point (Kelvin)
470.00
Boiling point (Celsius)
250.00
Boiling point (Kelvin)
523.00
General information
Molecular weight
118.01g/mol
Molar mass
118.0100g/mol
Density
1.2000g/cm3
Appearence

Chromic acid usually appears as red or dark purple crystals. It is hygroscopic and readily absorbs moisture from the air. The substance is often utilized in solution form, which tends to be orange to red and strongly acidic.

Comment on solubility

Solubility of Hydroxy-(hydroxy(dioxo)chromio)oxy-dioxo-chromium

The solubility of the compound hydroxy-(hydroxy(dioxo)chromio)oxy-dioxo-chromium can vary depending on specific conditions such as pH, temperature, and the presence of other ions in solution. However, several general observations can be made:

  • Polarity: The presence of hydroxyl groups suggests that this compound may exhibit moderate solubility in polar solvents, particularly water.
  • Complexation: The formation of complexes with other ions can influence solubility. For example, the stability of chromium complexes might enhance or hinder solubility depending on competing ligands.
  • pH Dependence: Solubility may significantly change with pH. In acidic conditions, changes in ionic charge and the possible protonation of hydroxyl groups could either increase or decrease solubility.
  • Temperature Effects: Generally, increased temperature can lead to increased solubility of many compounds, although specific behaviors can vary.

In conclusion, understanding solubility behavior involves a myriad of factors, and environmental conditions play a critical role. It is essential to conduct experimental studies to ascertain precise solubility values for practical applications.

Interesting facts

Interesting Facts About Hydroxy-(hydroxy(dioxo)chromio)oxy-dioxo-chromium

Hydroxy-(hydroxy(dioxo)chromio)oxy-dioxo-chromium is a fascinating compound with various intriguing properties and applications in the field of chemistry.

1. Chemical Structure

This compound contains a chromate anion, which is characterized by its central chromium atom surrounded by oxygen atoms. The presence of multiple hydroxy and dioxo groups contributes to its unique reactivity and interaction with other substances.

2. Applications in Chemistry

  • Catalysis: Due to its ability to facilitate various chemical reactions, this compound can be used as a catalyst in organic synthesis.
  • Analytical Chemistry: It plays a role in qualitative and quantitative analysis, aiding in the detection of other chemical species.
  • Studying Metal Coordination: The coordination chemistry of chromium is crucial in understanding its biological implications, especially in relation to metalloproteins.

3. Biological Significance

Chromium is essential in trace amounts for human health, particularly in glucose metabolism and insulin function. While hydroxy-(hydroxy(dioxo)chromio)oxy-dioxo-chromium itself is not a common supplement, its related compounds are often explored for potential health benefits, such as:

  • Improving insulin sensitivity
  • Regulating blood sugar levels

4. Environmental Impact

Chromium compounds have been studied for their roles in environmental chemistry. They can serve as indicators for pollution levels. Understanding their behavior in different environmental conditions can be pivotal for assessing their impact on ecosystems.

5. Safety Considerations

While chromium is essential in trace amounts, excessive exposure to chromium compounds poses environmental and health risks, leading to regulations on their usage. It's crucial to handle compounds like hydroxy-(hydroxy(dioxo)chromio)oxy-dioxo-chromium with care to mitigate potential hazards.

In conclusion, hydroxy-(hydroxy(dioxo)chromio)oxy-dioxo-chromium highlights the intersection of chemistry, biology, and environmental science, showcasing the importance of understanding complex compounds for advancements in multiple fields.

Synonyms
Dichromic acid
13530-68-2
Dichromic(VI) acid
Dichromsaeure
Chromic acid (H2Cr2O7)
EINECS 236-881-5
H2Cr2O7
mu-oxo-hexaoxodichromic acid
dihydrogen(heptaoxidodichromate)
CHEBI:23234
DTXSID30872954
[(HO)Cr(O)2OCr(O)2(OH)]
mu-oxido-bis(hydroxidodioxidochromium)
((HO)Cr(O)2OCr(O)2(OH))
DTXCID80820480
236-881-5
Dichromic acid (H2Cr2O7)
NA1463
UN1755
SCHEMBL6719
hydroxy-(hydroxy(dioxo)chromio)oxy-dioxochromium
NCIOpen2_004116
NS00112698
Chromic acid, solid [NA1463] [Oxidizer]
Q905857