what is hf chemistry
Quora User, Chemistry Student. Views Â· Quora User has 360+ answers and in. Chemistry. HF(g) is a colourless gas whose aqueous solution is known as Hydrofluoric acid, which is the real danger. HF (aq) is a weird acid as it is classified as 'weak' yet it is extremely dangerous. Its danger lies in the fact that it can be absorbed by the skin, causing burns which are not immediately noticed (hence the danger!).