Formation of Hydrogen Sulfide
H2 + S → H2S
Overview
Hydrogen gas reacts with sulfur to form hydrogen sulfide, the gas responsible for the characteristic smell of rotten eggs. This mildly exothermic reaction occurs at elevated temperatures. Hydrogen sulfide is highly toxic even at low concentrations.
Participants
| Role | Substance | Coefficient | State |
|---|---|---|---|
| Reactant | Hydrogen H | 1 | (g) |
| Reactant | Sulfur S | 1 | (s) |
| Product | Hydrogen Sulfide H₂S | 1 | (g) |
Everyday Example
The rotten egg smell near hot springs and volcanic areas comes from hydrogen sulfide produced by similar reactions underground.
Industrial Importance
Hydrogen sulfide is an important industrial chemical used in the production of sulfur and sulfuric acid. It is also a serious workplace hazard in petroleum refining and mining.
Properties
- Type
- Synthesis
- Reversible
- Yes
- Energy
- Exothermic
- ΔH
- -20.6 kJ/mol
Related Reactions
Fischer-Tropsch Synthesis (General)
Formation of Aluminum Oxide
Formation of Ammonia (Haber Process)
Formation of Barium Oxide
Formation of Barium Sulfate
Formation of Beryllium Oxide
Formation of Cadmium Oxide
Formation of Calcium Carbonate from Oxides
Formation of Calcium Hydroxide
Formation of Calcium Oxide (Quicklime)
Frequently Asked Questions
What is the equation for Formation of Hydrogen Sulfide?
The balanced equation is: H₂ + S → H₂S.
What type of reaction is Formation of Hydrogen Sulfide?
Formation of Hydrogen Sulfide is a synthesis reaction. It is reversible under certain conditions.
Is Formation of Hydrogen Sulfide exothermic or endothermic?
Formation of Hydrogen Sulfide is exothermic (releases energy). The enthalpy change (ΔH) is -20.6 kJ/mol.