Calculation of EDTA titration consumption
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When titrating the Ca2+ content using an EDTA disodium solution, how should the theoretical calculations be carried out? That is, theoretically, how many moles of EDTA disodium are required per 1 mole of Ca2+ in order to complete the titration? Please advise (Performed in a buffer solution at pH=10 using chrome black T as an indicator)
The reaction between EDTA and metal ions is 1:1.
EDTA and calcium ions react in a 1:1 ratio. Generally, EDTA reacts in a 1:1 ratio with metal ions, regardless of their valence state; however, there are exceptions, such as molybdenum in the +5 valence state, which reacts with EDTA in a 2:1 ratio.