A student performed the lodate Analysis and found that it took 7.80 mL of 0.02 M

Question

A student performed the lodate Analysis and found that it took 7.80 mL of 0.02 M Na_2S_2O_3 to titrate 4.00 mL of saturated copper iodate. Answer the following questions: 8. Using the balanced equations on page 79, what is the mole ratio of triiodide, I_3^-, to thiosulfate, S_2O_3^2-? 9. What is the mole ratio of iodate, IO_3^-, to triiodide, I_3? Calculate the number of moles of iodate in 7.80 mL of 0.02 M Na_2S_2O_3. What is the iodate concentration in the 4.00 mL of saturated copper iodate solution? Use this value to find the K_sp value for copper iodate?

Explanation / Answer

You are most likely talking about the net ionic equation:

I3(aq)+2S2O3–2(aq)3I–(aq)+S4O6–2(aq)

then

from this, realate coefficients

1 mol of I3- will react with 2 mol of S2O3-2

the

1:2 ratio

1/2 = mol of I3- / mol of S2O3-2

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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