Question

the titration between Zn2+ and EDTA is example of​

Answer 1

Answer:

The titration between Zn2+ and EDTA is an example of complexometric titration.

Explanation:

• In complexometric titration, first a complex between metal ion and metal indicator is formed.
• EDTA acts as a titrant which is standardized by Zinc solution.
• EDTA is a chelating agent which further forms metal-EDTA complex. Here, ZnEDTA2- complex is formed.
• The reaction between Zn2+ and EDTA is:

        $Zn^{2+} + EDTA^{4-} ---- > ZnEDTA^{2-}$

• This titration uses Eriochrome Black T as an indicator changing the color of the solution from purple to blue in the end of the titration.

Hence, this titration is used to estimate Zinc with the help of EDTA.

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