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QJEEM18Cha417: JEE Main 2018 Chemistry - Class 11 JEEM18Cha417 Solution: In a complexometric titration of metal ion with ligand M(Metal…

In a complexometric titration of metal ion with ligand
M(Metal ion) + L(Ligand) → C(Complex) end point is estimated spectrophoto - metrically (through light absorption). If 'M' and 'C' do not absorb light and only 'L' absorbs, then the titration plot between absorbed light (A) versus volume of ligand 'L' (V) would look like :

Multiple Choice Options

  • A https://ik.imagekit.io/novatra/photos/cc98b6c0e535cfe2649453cb9cb206b751475d8691c11e7dc8d8087d5f56b4a8.webp
  • B https://ik.imagekit.io/novatra/photos/933620743cbb8e78d04c6f5498a825f41e7fa2dda66b50bd0adb55af57cf4496.webp
  • C https://ik.imagekit.io/novatra/photos/71f238099ebca72445895f653b44fcc7843084cb4860a45018b3b0f220f50415.webp
  • D https://ik.imagekit.io/novatra/photos/eb01ec8869f8eca83de6f4545a433193e60225ad7c9876d561a162a1fe04a78a.webp

Step-by-Step Verified Solution

Ligand concentration is maximum when the reaction has not been initiated. At that point, absorption of light by ligands will be maximum. As the reaction starts, ligand concentration decreases so is the absorption of light till the point where all the metal ions are consumed and further complex formation does not take place. JEE Main 2018 (Online) 16th April Morning Slot Chemistry - Practical Organic Chemistry Question 76 English Explanation

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