He needed sodium chlorate so a hot plate was used to boil the bleach until crystals started to form. A more efficient way to achieve this reaction would be using electrolysis (check out the HHO ...

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Dilute solutions (approximately 0.0001 M) of the di-sodium iron ethylenediaminetetracetate have an absorption curve with a maximum at about 260 mµ. This peak is well separated from, and is much ...