Question

Introduction to Hydrogen sulfide.

Answer 1

Hydrogen sulfide $\left({\mathrm{H}}_2\mathrm{S}\right)$:-

1. It is actually a chemical compound with the chemical formula ${\mathrm{H}}_2\mathrm{S}$.
2. It is a colorless , inflammable, toxic, extremely hazardous gas having a “rotten egg” smell.
3. It occurs naturally in crude petroleum, natural gas and hot springs.
4. Hydrogen sulfide is also known as sewer gas, swamp gas and stink damp.
5. It's main application is in industrial sector.

Chemical properties of Hydrogen sulfide $\left({\mathrm{H}}_2\mathrm{S}\right)$:-

1. Boiling points of water and Hydrogen sulfide are $100°\mathrm{C}$ and $60°\mathrm{C}$, respectively.
2. Combination of air and ${\mathrm{H}}_2\mathrm{S}$ will result in an explosion.
3. Sulphur dioxide $\left({\mathrm{SO}}_2\right)$ will react with Hydrogen sulfide $\left({\mathrm{H}}_2\mathrm{S}\right)$ at high temperatures in the presence of catalysts for the production of water and elemental Sulphur.
4. Because Sulphur is not as electronegative as Oxygen , so ${\mathrm{H}}_2\mathrm{S}$ has comparatively weak intermolecular forces and therefore the boiling and melting points are much lower than in water $\left({\mathrm{H}}_2\mathrm{O}\right)$.

Safety Hazards:-

1. Hydrogen sulfide is a highly volatile and flammable substance, it can cause life-threatening conditions when treated carelessly.
2. Hydrogen sulfide $\left({\mathrm{H}}_2\mathrm{S}\right)$ gas burns out readily, which produces harmful gases and vapors such as Sulphur dioxide $\left({\mathrm{SO}}_2\right)$