The equation above describes the acid-base reaction process between potassium sulfide (K2S) and sulfuric acid (H2SO4) resulting in potassium bisulfate (KHSO4) and hydrogen sulfide (H2S).
- Reaction conditions:
The reaction takes place under normal temperature and pressure conditions.
- Reaction process:
Potassium sulfide (K2S) in the solution will dissociate into 2 K+ ions and 1 S2- ion. Sulfuric acid (H2SO4) will also dissociate into 2 H+ ions and 1 SO4 2- ion. The H+ ion will meet S2- ion to form H2S, while the 2 K+ ions will meet SO4 2- ion to form KHSO4.
- Occurrence:
During the reaction process, hydrogen sulfide gas (H2S) with a strong characteristic smell will appear. In the solution, what remains is potassium bisulfate (KHSO4) in the form of colorless crystals.