Finding the end point of an iodine titration. 4 of 5. The titrant, a standard thiosulfate solution, is titrated against the iodate solution. Starch is

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Finding the end point of an iodine titration. 4 of 5. The titrant, a standard thiosulfate solution, is titrated against the iodate solution. Starch is added part way through to turn it blue and sharpen the end point. When the solution becomes a pale blue the end point is very close.

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Photo credit: © MARTYN F. CHILLMAID/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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Keywords: -, blue, color, colour, iodate, iodine, iodometric, iodometry, molarity, pale, point, redox, sodium, solution, standard, starch, thiosulfate, titrant, titrated, titrating, titration