Question

The Interhalogen compound used in the estimation of iodine number in fats and oils is:

• A. ICl
• B. IBr
• C. $ICl_{3}$
• D. $IF_{7}$

Hint:

Remember: Wijs' solution = ICl. It "Wijs-ly" counts the double bonds!

Answer 1

The Correct Option is A

Step 1: Concept The Iodine Value (or Number) measures the degree of unsaturation (double bonds) in fats and oils.

Step 2: Meaning Higher unsaturation means more iodine or equivalent interhalogen can be absorbed.

Step 3: Analysis Wijs' solution, which is commonly used for this titration, consists of Iodine Monochloride (ICl) dissolved in glacial acetic acid.

Step 4: Conclusion ICl is the specific interhalogen compound employed for this chemical estimation. Final Answer: (A)