Potassium Hydroxide and Sulfuric Acid
2KOH + H2SO4 → K2SO4 + 2H2O
Overview
Potassium hydroxide reacts with sulfuric acid in a 2:1 ratio to form potassium sulfate and water. This diprotic acid neutralization produces a neutral salt that is one of the most important potassium fertilizers. The reaction is strongly exothermic.
Participants
| Role | Substance | Coefficient | State |
|---|---|---|---|
| Reactant | Sulfuric Acid H₂SO₄ | 1 | (aq) |
| Reactant | Potassium Hydroxide KOH | 2 | (aq) |
| Product | Water H₂O | 2 | (l) |
Everyday Example
Potassium sulfate fertilizer, used extensively in agriculture for potassium-sensitive crops like fruits and vegetables, can be made by this neutralization.
Industrial Importance
Potassium sulfate is a premium fertilizer for chloride-sensitive crops. It provides both potassium and sulfur without the chloride content of potassium chloride.
Properties
- Type
- Double Replacement
- Reversible
- No
- Energy
- Exothermic
- ΔH
- -114.2 kJ/mol
Related Reactions
Aluminum Hydroxide and Hydrochloric Acid
Ammonia and Hydrochloric Acid (White Smoke)
Barium Chloride and Sodium Sulfate Precipitation
Calcium Carbonate and Hydrochloric Acid
Calcium Chloride and Sodium Carbonate
Calcium Hydroxide and Carbon Dioxide (Limewater Test)
Calcium Hydroxide and Sulfuric Acid
Copper(II) Sulfate and Sodium Hydroxide
Iron(III) Chloride and Sodium Hydroxide
Lead Nitrate and Potassium Iodide (Golden Rain)
Frequently Asked Questions
What is the equation for Potassium Hydroxide and Sulfuric Acid?
The balanced equation is: 2KOH + H₂SO₄ → K₂SO₄ + 2H₂O.
What type of reaction is Potassium Hydroxide and Sulfuric Acid?
Potassium Hydroxide and Sulfuric Acid is a double replacement reaction.
Is Potassium Hydroxide and Sulfuric Acid exothermic or endothermic?
Potassium Hydroxide and Sulfuric Acid is exothermic (releases energy). The enthalpy change (ΔH) is -114.2 kJ/mol.