Question

An aqueous solution of a halogen salt of potassium reacts with same halogen ${}^{\prime }{X}^{\prime }$ to given ${}^{\prime }K{X}_3^{\prime }$, a violet coloured solution which is used in volumetric exercises (iodimetric titrations). The halogen ${}^{\prime }{X}^{\prime }$ is

• A. Fluorine
• B. Bromine
• C. Chlorine
• D. Iodine

Answer 1

Answer: (D)

Iodine

Ideometric titration is a method titration is a method of volumetric chemical analysis, a redox titration where the appearence or disappearance of elementary iodine indicates the end point.

So this reaction is only for Iodine (Voilet).