Question

In: Chemistry

Consider the titration of 25.00 mL of 0.0750 M Sn2+ with 0.1000 M Fe3+ in 1...

Consider the titration of 25.00 mL of 0.0750 M Sn2+ with 0.1000 M Fe3+ in 1 M HCl to give Fe2+ and Sn4+ , using a Pt electrode for the cathode and a Standard Hydrogen Electrode for the anode (connected to negative terminal of potentiometer).

e) Sketch the titration curve and indicate the equivalent pt, and the Etitr when ½ of the moles of analyte has been oxidized.

Solutions

Expert Solution

Let us consider the reaction involved in the redox titration,

The stoichometry of Fe(III):Sn(II)=2:1

The equivalence point E can be calculated as follows.

At equivalence point,

According to Nernst equation,

When half the moles of analyte has been oxidized, the E can be determined as follows.

The pH curve is as follows.


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