【Daily Question】Chemical Analysis Version 2021.10.13

2021-10-13View Original

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The reason for adding a buffer solution in complexometric titration is A, the chelating ability of EDTA is dependent on acidity; B, metal indicators have a specific range of acidity within which they can be used; C, H+ ions are released during the reaction between EDTA and metal ions; D, K’MY changes as acidity varies. C

Reply #22021-10-13

C But I don’t think disodium ethylenediaminetetraacetate will release hydrogen with metal ions; it’s correct if it’s ethylenediaminetetraacetic acid. Coordination titration has requirements regarding the pH of the solution; the optimal pH for EDTA to bind with various ions varies.

Reply #32021-10-13

C. H is released during the reaction between EDTA and metal ions+

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【Daily Question】Chemical Analysis Version 2021.10.13

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