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NEET
Exam
NEET
Subject
Chemistry
Chapter
Redox Reactions

NEET · Chemistry · Redox Reactions

What is the purpose of adding starch to the solution during...

What is the purpose of adding starch to the solution during iodometry using Cu(II) as the oxidizing agent?

Options

  1. ATo make the solution more colorful.
  2. BTo stabilize the Cu2I2 precipitate.
  3. CTo provide a visual indicator for the endpoint.
  4. DTo enhance the reaction between Cu²⁺ and I⁻.

Correct answer

C. To provide a visual indicator for the endpoint.

Step-by-step solution

Starch is added to the solution to act as an indicator. It forms a complex with iodine, resulting in an intense blue color, which serves as a visual indicator for the endpoint of the reaction.
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