Question

What is the principle of iodometric titration? Full explanation

Answer 1

Answer:

The Basic Principle of iodometric titration is to determine the concentration of an oxidising agent in solution. iodometry involves indirect titration of iodine liberated by reaction with the analyte.In an iodometric titration, a starch solution is used as an indicator since it can absorb the I2 that is released. This absorption will cause the solution to change its colour from light yellow to a dark blue colour when titrated with standardised thiosulfate solution. This indicates the end point of the titration.

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Answer 2

Iodometric titration is the titration method that helps to determine the concentration of oxidizing agents in the solution.

Explanation :

• Iodometric titration is a volumetric analysis that involves a redox reaction
• In this type of titration, iodine is liberated by reaction with the analyte
• But in iodimetry, direct titration uses iodine as titrant.
• In this iodometry. Sodium thiosulphate Na₂S₂O₃ is used as a reducing agent and is used to titrate iodine.
• A starch solution is used as an indicator as it can absorb the iodine released.
• It is a general method used to determine the concentration of the oxidizing agents in the solution.
• The absorption of iodine causes a change in colour of the solution from deep blue to light yellow upon titration with standardised thiosulphate.
• This colour change is the endpoint of the titration.