What is the role of indicators in the iodometry titration to estimate iodine? Can we estimate iodine without indicator?
Answers
Answer:
Iodometric titration is a volumetric chemical analysis
Iodometric titration is general method to determine the concentration of oxidizing agent solution
In iodometric titration there is redox titration
Iodometric titrations involves indirect titration of iodine liberated iodine using iodine as titrant
where the appearance or dissapearance of elementary iodine indicates the end point
In Redox titration ( type of Iodometric titation)
In redox titration using sodium thiosulphate as reducing agent it is known as iodometric titration
since it is used to specifically to titrate iodine
In iodometric titration starch is used as indicator since it can absorb Iodine that is released
Absorption will cause to change its colour from light yellow to dark blue when titrated with standardized sodium thiosulphate solution
Explanation: