Question

Which sentences is false about iodimetry? *

a. Direct method

b. Free I2 is converted to I- ion with reducing agent.

c. Titrant is I2 and analyte is reducing agent.

d. Covers the titrations with a standarded solutions of iodine​

Answer 1

Explanation: In an iodometric titration, iodide is oxidised with the help of an acid to produce I2, then titrated with a reducing agent to produce iodide once more.

Answer 2

(a) Direct Method is the sentence which is false about iodometry.

• Iodometry is a method which is used for volumetric chemical analysis.
• It is also known as redox titration as appearance and disappearance of elementary iodine indicates the end point.
• The free iodine is converted to iodine ion with the reducing agent which reduces it completely.
• The titrant in the process is iodine and the analyte is a solution of starch and iodine.
• The end point is indicated by the formation of a dark blue complex.