Van't Hoff Factor
| Formula / Notation | i = measured / calculated (no dissociation) |
|---|---|
| Also Known As | Van't Hoff factor i, osmotic coefficient, dissociation factor, electrolyte factor |
What is Van't Hoff Factor?
The van't Hoff factor (i) is a correction factor used in colligative property calculations to account for the fact that solutes may dissociate (electrolytes) or associate (some carboxylic acids) when dissolved. For non-electrolytes, i = 1. For strong electrolytes that fully dissociate, i equals the number of ions produced per formula unit. For weak electrolytes, i is between 1 and the maximum number of ions.
Formula & Notation
Other Names / Synonyms: Van't Hoff factor i, osmotic coefficient, dissociation factor, electrolyte factor
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
The van't Hoff factor (i) is a correction factor used in colligative property calculations to account for the fact that solutes may dissociate (electrolytes) or associate (some carboxylic acids) when dissolved. For non-electrolytes, i = 1. For strong electrolytes that fully dissociate, i equals the number of ions produced per formula unit. For weak electrolytes, i is between 1 and the maximum number of ions.
Calculating colligative properties of electrolyte solutions. Osmotic pressure of physiological solutions. Antifreeze (ethylene glycol) calculations. Boiling point elevation and freezing point depression. Pharmaceutical IV fluid formulation. Osmometry.
Theoretical factor — safety depends on specific electrolyte. Strong acids/bases (NaOH, HCl, H₂SO₄): highly corrosive.
The formula or notation for Van't Hoff Factor is: i = measured / calculated (no dissociation)