Iodine solution

How to make iodine solution

  • Iodine is not a primary standard so the solution has to be standardized using thiosulfate.
  • Iodine is not soluble in water but it can be made soluble by dissolving it in KI.
  • This forms a KI3- complex ion which works like an iodine solution in all re-dox reactions.
  • This solution can be used to estimate ascorbic acid or vitamin C.
  • Dissolve 6.345 grams in 10 grams of KI in about 25 ml of distilled water and diluted to 1 liter by adding distilled water.

How to prepare iodine solution in water

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