Razlika med natrijevim metabisulfitom in natrijevim ščepcem
When sodium sulfite is oxidized sodium sulohate is formed. and the unoxidized sulfite jon is reacted with hvdrochloric acid to become sulphur dioxide, and cesium chloride is added. Only the sulphate ion which was oriąinally oxidized reacts with cerium ion to form cerium sulfate. precipitation.