What is the solubility of HF?
What is the solubility of HF?
Solubility is the ability of a solid, liquid, or gaseous chemical substance (referred to as the solute) to dissolve in solvent (usually a liquid) and form a solution. A solution is considered saturated when adding additional solute no longer increases the concentration of the solution.
Is HF gas soluble in water?
It can exist as a colorless gas or as a fuming liquid, or it can be dissolved in water. When hydrogen fluoride is dissolved in water, it may be called hydrofluoric acid.
What is the temperature of HF?
General. Hydrofluoric acid(HF) is a colorless liquid at normal atmospheric pressure and temperatures less than 19oC. Above the temperature of 19oC it turns into a gas. It is an extremely corrosive.
What is the heat of formation of HF gas?
Enthalpy of formation of gas at standard conditions (nominally 298.15 K, 1 atm.)
| ΔfH°gas (kJ/mol) | -273.30 ± 0.70 |
| Method | Review |
| Reference | Cox, Wagman, et al., 1984 |
| Comment | |
|---|---|
| CODATA Review value |
What is the heat of formation of H2O?
[SOLVED] Heat of formation of H2O is – 188 kJ/mol and H2O2 is 286 kJ/mol.
What are the 3 factors affecting solubility?
If Gases as a solute needs to be dissolved in a solvent, there are factors influencing solubility, such as temperature, nature of solvent and solute, and pressure.
How does the solubility of a gas change with temperature?
In general, solubility of a gas in water will decrease with increasing temperature: colder water will be able to have more gas dissolved in it. Solubilities of Gases in Water Methane, oxygen, carbon monoxide, nitrogen, and helium all have different solubilities in water, but all of them become less soluble with increasing temperature.
When does hydrogen fluoride boil at what temperature?
Hydrogen fluoride does not boil until 20 °C in contrast to the heavier hydrogen halides, which boil between −85 °C (−120 °F) and −35 °C (−30 °F). This hydrogen bonding between HF molecules gives rise to high viscosity in the liquid phase and lower than expected pressure in the gas phase.
How is hydrogen fluoride miscible with other halides?
Hydrogen fluoride is miscible with water (dissolves in any proportion), whereas the other hydrogen halides have large solubility gaps with water.
Which is more dangerous HF or anhydrous hydrofluoric acid?
Both anhydrous hydrofluoric acid and aqueous solutions are clear, colorless, and highly corrosive liquids. When exposed to air, anhydrous HF and concentrated solutions produce pungent fumes, which are also dangerous.
