Equação de Wilke e Chang
Default

Input data

Temperature

Solution viscosity

Molar mass of solvent

Molar volume

Output data

Description

The Wilke and Chang equation is best used for dilute non-electrolyte solutions (concentration close to 1%).

Atomic volume table

ElementAtomic Volume (cm³/gmol)
Bromine27.0
Carbon14.8
Chlorine21.6
Hydrogen3.7
Iodine37.0
Nitrogen, double bond15.6
Nitrogen, in primary amines10.5
Sulphur25.6
Nitrogen, in secondary amines12.0
Oxygen, except as noted below7.4
Oxygen, in methyl esters9.1
Oxygen, in methyl ethers9.9
Oxygen, in higher chain ethers and other esters11.0
Oxygen, in acids12.0

Molecular volume table

CompostMolecular Volume, Va (cm³/gmol)
Hydrogen, H214.3
Nitric oxide, NO23.6
Oxygen, O225.6
Nitrous oxide, N2036.4
Nitrogen, N231.2
Ammonia, NH325.8
Air29.9
Water, H2018.9
Carbon monoxide, CO30.7
Hydrogen sulfide, H2S32.9
Carbon dioxide, CO234.0
Bromine, Br253.2
Carbonyl sulfide, COS51.5
Chlorine, Cl248.4
Sulfur dioxide, SO244.8
Iodine, I271.5

Table of commonly used values

SolventParameter - Φb
Water2.26
Methanol1.9
Ethanol1.5
Non-polar solvents1

References

  • WELTY, James; WICKS, Charles E.; WILSON, Robert E.; RORRER, Gregory L. Fundamentals of Momentum, Heat and Mass Transfer. 5th Ed. John Wiley & Sons, 2008.