Hydrofluoric acid (HF) is the aqueous solution of hydrogen fluoride. It is also called fluoric acid or fluorhydric acid. Hydrofluoric acid is a solution of hydrogen fluoride (HF) in water. It is a colourless solution that is highly corrosive, capable of dissolving many materials, especially oxides. Hydrofluoric acid is classified as a weak acid because of its lower dissociation constant compared to the strong acids.
Hydrofluoric acid is a very strong, reactive and corrosive acid. It readily reacts with bases, acids, and oxidants.Hydrogen fluoride is a colorless gas with a density of 1.15 g/L at room temperature, or a colorless liquid (below 20°C) with a density of 0.99 g/mL. Hydrofluoric acid (solution of HF in water), is a colorless solution.
Applications Of Hydrofluoric Acid :-
1. Hydrofluoric acid is widely used in the preparation of many useful fluorine compounds, such as Teflon (PTFE plastic), Freon (refrigerant), fluorocarbons, and many medications such as fluoxetine (Prozac).
2. It is also used for many industrial purposes such as glass etching, metal cleaning, and rust removal.
3. It is used in the semiconductor industry to clean silicon wafers.
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