<Tr> <Td_colspan="2"> Infobox references </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> </Tr> <P> The compound hydrogen chloride has the chemical formula H Cl and as such is a hydrogen halide . At room temperature, it is a colorless gas, which forms white fumes of hydrochloric acid upon contact with atmospheric water vapor . Hydrogen chloride gas and hydrochloric acid are important in technology and industry . Hydrochloric acid, the aqueous solution of hydrogen chloride, is also commonly given the formula HCl . </P> <P> Hydrogen chloride is a diatomic molecule, consisting of a hydrogen atom H and a chlorine atom Cl connected by a covalent single bond . The chlorine atom is much more electronegative than the hydrogen atom, making this bond polar . Consequently, the molecule has a large dipole moment with a negative partial charge (δ −) at the chlorine atom and a positive partial charge (δ +) at the hydrogen atom . In part because of its high polarity, HCl is very soluble in water (and in other polar solvents). </P>

Is hydrogen chloride a gas at room temperature