We used the winkler titration method for our dissolved oxygen experiments.
We added magnesium sulphate and sodium iodine.
For all the methods on the internet it says to use manganese sulphate and potassium iodide.
We have to explain how the method works and the chemistry behind it, so does the magnesium sulphate do the same job as the manganese sulphate likewise the sodium iodine does the same job as potassium idodie?