In a complexometric tritration of metal ion with ligand M (Metali… - Vidyadip

MCQ

In a complexometric tritration of metal ion with ligand $M$ (Metalion) $+L$ (Ligand) $\to $ $C$ (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

✓
B
C
D

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Answer

Correct option: A.

a
Initially ligand is 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.

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