Description
The Wilke and Chang equation is best used for dilute non-electrolyte solutions (concentration close to 1%).
Atomic volume table
| Element | Atomic Volume (cm³/gmol) |
|---|
| Bromine | 27.0 |
| Carbon | 14.8 |
| Chlorine | 21.6 |
| Hydrogen | 3.7 |
| Iodine | 37.0 |
| Nitrogen, double bond | 15.6 |
| Nitrogen, in primary amines | 10.5 |
| Sulphur | 25.6 |
| Nitrogen, in secondary amines | 12.0 |
| Oxygen, except as noted below | 7.4 |
| Oxygen, in methyl esters | 9.1 |
| Oxygen, in methyl ethers | 9.9 |
| Oxygen, in higher chain ethers and other esters | 11.0 |
| Oxygen, in acids | 12.0 |
Molecular volume table
| Compost | Molecular Volume, Va (cm³/gmol) |
|---|
| Hydrogen, H2 | 14.3 |
| Nitric oxide, NO | 23.6 |
| Oxygen, O2 | 25.6 |
| Nitrous oxide, N20 | 36.4 |
| Nitrogen, N2 | 31.2 |
| Ammonia, NH3 | 25.8 |
| Air | 29.9 |
| Water, H20 | 18.9 |
| Carbon monoxide, CO | 30.7 |
| Hydrogen sulfide, H2S | 32.9 |
| Carbon dioxide, CO2 | 34.0 |
| Bromine, Br2 | 53.2 |
| Carbonyl sulfide, COS | 51.5 |
| Chlorine, Cl2 | 48.4 |
| Sulfur dioxide, SO2 | 44.8 |
| Iodine, I2 | 71.5 |
Table of commonly used values
| Solvent | Parameter - Φb |
|---|
| Water | 2.26 |
| Methanol | 1.9 |
| Ethanol | 1.5 |
| Non-polar solvents | 1 |