Which statement correctly describes iodimetry?

AIodine liberated from KI by an oxidising agent is titrated with standard thiosulfate
BAn oxidising agent is titrated directly with standard thiosulfate solution without using KI
CA reducing agent is titrated directly with a standard iodine solution, with starch as indicator
DAn acid is titrated with iodine using phenolphthalein as indicator

Answer: C

In iodimetry, standard

I X_{2}

is the titrant and it oxidises the analyte (a reducing agent) directly; starch gives a blue colour at the end point. Titration of liberated iodine with thiosulfate is iodometry.

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