Enter the degree of dissociation and the number of ions formed from one formula unit of the substance to determine the Van’t Hoff Factor.

## Van’t Hoff Factor Formula

The following formula can be used to calculate a Van’t Hoff Factor.

i = a*n + (1 – a )

- where i is the Van’t Hoff Factor
- a is the degree of dissociation
- n is the number of ions formed from one formula unit of the substance.

## Van’t Hoff Factor Definition

The Van’t Hoff Factor is the ratio of the actual concentration of particles produced when a substance is dissolved and the concentration of a substance as calculated from it’s mass.

## Van’t hoff Factor Example

How to calculate Van’t Hoff Factor?

**First, determine the degree of dissociation.**Calculate or measure the total degree of dissociation.

**Next, determine the number of ions formed.**Calculate the number of ions formed per one unit of substance.

**Finally, calculate the Van’t Hoff Factor.**Calculate the factor using the equation above.

## FAQ

**What is a Van’t Hoff Factor?**

A Van’t Hoff Factor is defined as the measure of the effect of a solute on the colligative properties such as osmotic pressure.