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Hydrogen selenide

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Identification
Molecular formula
H2Se
CAS number
7783-07-5
IUPAC name
hydrogen selenide;lambda1-thallane
State
State

In its fundamental state at room temperature, hydrogen selenide exists as a gas. This gaseous state is characterized by its toxic and reactive nature, handling precautions are necessary.

Melting point (Celsius)
-64.00
Melting point (Kelvin)
209.10
Boiling point (Celsius)
-41.25
Boiling point (Kelvin)
231.90
General information
Molecular weight
80.98g/mol
Molar mass
80.9800g/mol
Density
3.9960g/cm3
Appearence

Hydrogen selenide is a colorless gas under standard conditions. However, it often appears as a colorless liquid when condensed, and it has an intense, irritating rotten horseradish-like odor. The substance is also known for its corrosive properties.

Comment on solubility

Solubility of Hydrogen Selenide (H2Se)

Hydrogen selenide, or H2Se, showcases some intriguing characteristics regarding its solubility:

  • High Solubility in Water: H2Se is known for its remarkable solubility in water, making it an important compound in various chemical applications.
  • Temperature Influence: Its solubility tends to increase with rising temperatures, which is crucial when considering reactions in aqueous solutions.
  • Gas Form: In its gaseous state, hydrogen selenide is quite toxic; however, when dissolved in water, it can form selenide ions, which significantly alters its behavior in solutions.
  • Comparison with Other Hydrogen Compounds: Unlike its counterparts, such as hydrogen sulfide (H2S), hydrogen selenide exhibits a stronger acidic nature in solution.

In summary, the solubility of H2Se is noteworthy due to its high affinity for water and the implications it has for formation of selenide ions and its acidity, allowing chemists to manipulate it effectively under various conditions.

Interesting facts

Interesting Facts about Hydrogen Selenide (H2Se)

Hydrogen selenide is an intriguing chemical compound with a variety of applications and characteristics that make it worthy of discussion. Here are some fascinating insights about this compound:

  • Nature and Properties: Hydrogen selenide is a binary hydride of selenium. It shares similarities with its sulfur counterpart, hydrogen sulfide (H2S), manifesting as a toxic and foul-smelling gas.
  • Toxicity: This gas is highly toxic and can be lethal at very low concentrations. It is known to cause serious health issues upon exposure, making it essential to handle with extreme caution. The phrase "Better safe than sorry" rings especially true in the case of hydrogen selenide!
  • Uses in Industry: Despite its toxicity, hydrogen selenide is valuable in various industrial applications. It is often utilized in the production of selenium, an essential element in electronics, photography, and glassmaking.
  • Environmental Impact: Due to its toxicity, hydrogen selenide is a pollutant of concern, especially in areas with high industrial activity. Careful regulation and monitoring are necessary to prevent environmental contamination.
  • Research Applications: In the field of chemical research, hydrogen selenide serves as a precursor for the synthesis of other selenium-containing compounds, which can lead to innovative breakthroughs in materials science.

In summary, hydrogen selenide is not just a simple compound—it embodies a combination of danger and utility that reflects the complexities of chemistry. As you explore more about this remarkable compound, remember that its potential is only as great as the precautions taken to handle it safely!