A solution prepared by mixing 50.0 mL of 0.220 M AgNO3 and 50.0 mL of 0.220 M Tl

Question

A solution prepared by mixing 50.0 mL of 0.220 M AgNO3 and 50.0 mL of 0.220 M TlNO3 was titrated with 0.440 M NaBr in a cell containing a silver indicator electrode and a reference electrode of constant potential 0.175 V. The reference electrode is attached to the positive terminal of the potentiometer, and the silver electrode is attached to the negative terminal. The solubility constant of TlBr is Ksp = 3.6 × 10–6 and the solubility constant of AgBr is Ksp = 5.0 × 10–13. (a) Which precipitate forms first? What is the cell potential when the following volumes of 0.440 M NaBr have been added? 1.0mL 13.3mL 24.0mL 24.9mL 25.3mL 38.3mL 50.0mL 52mL

Explanation / Answer

There will be two equivalence points - first, when Ag+ was titrated, second, when Tl+ was titrated. Without calculating it is hard to predict whether you will see one, or two inflection points on the curve.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.