You were given a potassium iodate solution of known concentration but were not t

Question

You were given a potassium iodate solution of known concentration but were not told the concentration of the sodium thiosulfate solution. Why was the concentration of sodium sulfate not specified on the stock solution bottle? This was an arbitrary choice. You could have been told the sodium thiosulfate concentration with the potassium iodate concentration unknown. Potassium iodate solution is stable and can be stored for long periods of time while sodium thiosulfate is less stable and thus can't be prepared too far in advance. You were not told the sodium thiosulfate concentration in order to give you practice doing the titration. You wish the titration's endpoint to go from black to colorless so you must titrate known iodate with unknown thiosulfate. Thiosulfate ion is the conjugate base of thiohydrogensulfate ion and cannot have a known concentration.

Explanation / Answer

option (b) is correct

Related Questions

Navigate

• Browse (All)
• Browse Y
• Subjects

---

---

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