Revision - Potassium Compounds

Potassium Oxide
Formula as commonly written: K2O

Physical properties
• Colour: yellowish white to grey
• Appearance: crystalline solid

Potassium peroxide
K2O2

Potassium hydroxide
Potassium Hydroxide, commonly called caustic potash with formula KOH, is a caustic compound of strong alkaline chemical dissolving readily in water, giving off much heat and forming a caustic solution.

Potassium carbonate
Potassium carbonate is a white salt, soluble in water (insoluble in alcohol), which forms a strongly alkaline solution.

Potassium bicarbonate
Potassium bicarbonate (also known as potassium hydrogen carbonate or potassium acid carbonate), is a colorless, odorless, slightly basic, salty substance.

Potassium chloride - KCl
Potassium chloride is also commonly known as "Muriate of Potash".

Potassium sulphate
Potassium sulfate (K2SO4) (also known as potash of sulfur) is a non-flammable white crystalline salt which is soluble in water. The chemical is commonly used in fertilizers, providing both potassium and sulfur.