What is the specific heat of HF?
6.21 Hydrogen Fluoride
| Chemical Name | Hydrogen fluoride |
|---|---|
| Molar specific heat, constant volume† (30°C, 1 atm) | 47.7 J/gmole °C |
| Specific heat ratio | 5.26 |
| Thermal conductivity of gas (100.6°C, 1 atm) | 2.55 × 10−4 J/sec cm °C |
| Solubility in water | Reacts |
What is the diffusion coefficient of water?
0.0016 mm2/s
Carbon dioxide in air has a diffusion coefficient of 16 mm2/s, and in water its diffusion coefficient is 0.0016 mm2/s.
What is the heat of formation of HF gas?
The enthalpy of formation of monomeric HF, ΔfHοm(HF(ideal gas)) = −(272.72 ± 0.05) kJ·mol−1, can be obtained if the ionization energy of HF reported by Hu and Hepburn19 is combined with the ATcT reference values20 for H+(g) and F−(g).
Does hydrogen fluoride have hydrogen bonding?
Each of the halogens forms a binary compound with hydrogen, HX. At ambient temperature and pressure, these compounds are gases, with hydrogen fluoride having the highest boiling point owing to intermolecular hydrogen bonding.
How is the diffusion coefficient defined?
Definition of diffusion coefficient : the quantity of a substance that in diffusing from one region to another passes through each unit of cross section per unit of time when the volume-concentration gradient is unity.
How is HF molecule formed?
Structure and Chemical Properties of Hydrogen Fluoride Hydrogen fluoride is formed through covalent bonding (electron sharing) between a hydrogen atom and a fluorine atom. This gives hydrogen fluoride a simple chemical formula of HF.
What is the name of the acid formed by HF?
Hydrofluoric acid
Hydrofluoric acid is a solution of hydrogen fluoride (HF) in water….Hydrofluoric acid.
| Names | |
|---|---|
| Chemical formula | HF (aq) |
| Appearance | Colorless liquid |
| Density | 1.15 g/mL (for 48% soln.) |
| Acidity (pKa) | 3.17 |
What does a high diffusion coefficient mean?
diffusivity
The diffusion coefficient, also known as the diffusivity, describes how fast one material can diffuse through another material. The higher the diffusion coefficient, the faster diffusion will be.
What are the chemical properties of hydrogen fluoride?
• The chemical formula for hydrogen fluoride is HF, and its molecular weight is 20.01 g/mol. (4) • Hydrogen fluoride is a colorless gas that is highly soluble in water. (4) • Hydrogen fluoride has a strong irritating odor; the odor threshold is 0.03 mg/m 3. (4) • Anhydrous hydrogen fluoride is one of the strongest acids known. (2)
What are the diffusion coefficients of he-co and h2-co?
He-CO and H2-CO. The diffusion coefficients of He-CO and H2-CO can be well approximated by those for He-N2 and H2-N2 (Group I), respectively, because CO and N2 are isosteric molecules and He N2 and H2-N2 have more reliable measurements than do He-CO and H2-CO.
What is the true value of a diffusion coefficient?
that the “true” value of a diffusion coefficient lies within the specified range of uncertainty. An at tempt has also been made to be fair and not arbi trarily downgrade good measurements, but it is
What is the concentration of hydrogen Flouride in the atmosphere?
The compound was identified in flue gas from an unspecified waste incineration plant (mixed plastics and coal as thermal feed), at a concentration range of not detected to 8.2 mg/N cu m (3). Hydrogen flouride was detected at a concentration of 00.3 ppm in the atmosphere of a nuclear submarine (1).