QuestionVolumetric analysis / iodometry
In quantitative volumetric analysis for the iodometric determination of copper, what will be the required amount of CuSO₄.5H₂O for preparing 100 mL of N/40 standard solution ?
Reactions involved are :
2Cu²⁺ + 4I⁻ ⟶ 2CuI + I₂
I₂ + 2S₂O₃²⁻ ⟶ S₄O₆²⁻ + 2I⁻
(Molecular weight of CuSO₄.5H₂O is 159.60 g/mol.)
- (a) 0.19 g
- (b) 0.29 g
- (c) 0.39 g
- (d) 0.49 g
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