Question

what is the value of vant hoff factor if solute forms tetramer in the solution

Answer 1

For most non-electrolytes dissolved in water, the van 't Hoff factor is essentially 1. For most ionic compounds dissolved in water, the van 't Hoff factor is equal to the number of discrete ions in a formula unit of the substance. This is true for ideal solutions only, as occasionally ion pairing occurs in solution.

The formula for determining the van't Hoff factor is i = measured value/calculated value. The van't Hoff factor can be applied to any of the colligative properties. For our work with colligative properties, we will always use the ideal value for the solution.