Initially ligand consumed by metal due to formation of complex. So absorbed light (A) remain constant, after complex formation is completed, extra volume of ligand solution increases ligand concentration and also increases absorbed light.
JEE Main 2018 — Chemistry Inorganic Chemistry
In a complexometric titration of metal ion with ligand M(Metalion)+L(Ligand)→C(Complex) end point is estimated spectrophotometrically (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:
Held on 16 Apr 2018 · Verified 6 Jul 2026.




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