Hydrosulfuric acid, also known as hydrogen sulfide or sulfane is a chemical compound. Its chemical formula is H2S. It exists in the form of a colourless gas and has a rotten egg smell.
Hydrogen sulfide was discovered by Carl Wilhelm Scheele in 1777.
Index
Chemical Properties of Hydrosulfuric Acid
Here are the chemical properties of Hydrosulfuric acid
| Chemical Formula | H2S |
| Molar Mass | 34.08 g mol-1 |
| Density | 1.363 g dm-3 |
| Melting Point | -82℃ |
| Boiling Point | -60℃ |
| Solubility in Water | 4 g dm-3 |
| Heat Capacity | 1.003 J K-1g-1 |
| Enthalpy of Formation | -21 kJ mol-1 |
Production of Hydrosulfuric Acid
Hydrosulfuric acid is most commonly obtained from sour gas. This gas can also be produced by treating hydrogen with molten elemental sulfur.
A standard lab preparation:
FeS + 2HCl -> FeCl2 + H2S
Many metal and nonmetal sulfides liberate hydrogen upon exposure to water,
6H2O + Al2S3 -> 3H2S + 2Al(OH)3
A small amount of hydrogen sulfide occurs in crude petroleum. It also occurs from human activity, i.e., from industrial sources such as petroleum refineries.
Applications
- Hydrogen sulfide is used to produce various organosulfur compounds, such as methanethiol, ethanethiol, etc.
- It was also important in analytical chemistry in the qualitative inorganic analysis of metal ions.
- It is used to separate deuterium oxide(heavy water) from normal water via the Girdler sulfide process.
- It is also used as an agricultural disinfectant.
FAQs
It is used by farmers in agriculture as disinfectants.
The chemical formula of hydrogen sulfide is H2S.
Being exposed to medium concentration levels of H2S can lead to severe eye irritations, respiratory issues, nausea, etc.
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