[ChargePositive]

Hello all,
I have a question about determining the amount of available oxygen in water by titration. To do this I know that we add Potassium to the Iodide to avoid vaporization, but if this had not been the case, would the results be different? Why?

I'm assuming that it's because it would take a different amount of titrant to change the color thus leading to an inaccurate determination of oxygen, however I'm not too sure if this is true.

Thanks guys!

[Borek]

we add Potassium to the Iodide to avoid vaporization

We do add something to something, but not potassium, and not to the iodide.

I'm assuming that it's because it would take a different amount of titrant to change the color thus leading to an inaccurate determination of oxygen, however I'm not too sure if this is true.

Depends on what you mean by the "amount of titrant". Number of moles of iodine, or volume of the solution used?

Do you know chemistry behind the determination? Reaction equations? Reaction stoichiometry?