The potassium sulphate formula is K₂SO₄. This compound is a type of inorganic chemical, specifically a salt. It is commonly used in fertilizers due to its high potassium content, which is essential for plant growth.

In terms of its structure, the potassium sulphate formula indicates that each molecule consists of two potassium ions (K⁺) and one sulphate ion (SO₄^2-). When dissolved in water, potassium sulphate dissociates into these ions, making it an ionic compound.

The potassium sulphate formula reveals that it is a stable compound, often used to provide potassium and sulfur to crops without introducing chloride ions. Its role in agriculture is significant as it helps in enhancing the overall health of plants, especially for those sensitive to chlorine.

To summarize, the potassium sulphate formula is a key representation of its chemical composition, K₂SO₄, signifying two potassium ions and one sulphate ion. This compound plays an important role in various industries, particularly in the production of fertilizers and other chemical processes.