Question

Difference between iodometric and iodimetric titration.

Answer 1

When an analyte that is a reducing agent is titrated directly with a standard iodine solution, the method is called iodimetry.
When an analyte that is an oxidizing agent is added to excess iodide to produce iodine, and the iodine produced is determined by titration with sodium thiosulfate, the method is called iodometry.

Iodometry involves indirect titration of iodine liberated by reaction with the analyte, whereas iodimetry involves direct titration using iodine as the titrant.