Chemistry · Importance of coordination compounds (in qualitative analysis, extraction of metals and in biological systems)

The disodium salt of ethylene diamine tetracetic acid can be used to estimate th

The disodium salt of ethylene diamine tetracetic acid can be used to estimate the following ion(s) in the aqueous solution.

  • A. \( M g^{2+} \) ion
  • B. \( C a^{2+} \) ion
  • C. \( N a^{+} \) ion
  • D. both \( M g^{2+} \) and \( C a^{2+} \)

Step-by-step solution

EDTA disodium salt forms stable complexes with divalent metal cations such as Ca2+ and Mg2+, allowing their quantitative estimation via complexometric titration. It does not form a sufficiently stable complex with Na+ for determination.
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