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- ===Iodometry=== ...sub>2</sub>O has an excellent shelf-life, it is used as a [[titrant]] in [[iodometry]]. Na<sub>2</sub>S<sub>2</sub>O<sub>3</sub>•5H<sub>2</sub>O is also a co12 KB (1,720 words) - 16:42, 27 September 2010