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What is the chemical formula for potassium sulfide?

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Quick Answer

Potassium sulfide, also known as dipotassium monosulfide, consists of two potassium ions bonded to a sulfide atom, rendering the chemical formula K2S. Rarely found in nature due to its high reactivity with water, potassium sulfide is refined from the more common potassium sulfate (K2SO4) and is used in many industries.

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Potassium sulfide is a solid, colorless, inorganic compound at room temperature. However, due to its high reactivity with water, potassium sulfide sometime refers to the resulting mixture of compounds (potassium hydosulfide and potassium hydroxide). In its pure form, potassium sulfide is an important part of applications ranging from pyrotechnics to pharmaceuticals.

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