General Chemistry 4th Edition University Science Books The amount of Is (aq) in

Question

General Chemistry 4th Edition University Science Books The amount of Is (aq) in a solution can be determined by titration with a solution containing a known concentration of S0() iosulfate ion). The determination is based on the net ionic equation Given that it requires 34 2 mlL of 0.380 M Na s 0a) to trate a 25 0mL sample of Is (aa), calculate the molarity of 1s (aq) in the solution. Number O Previous Give Up & Virw Solution-Check Answer 0 Next Exit- Hint about us careers privacy poicyterms of use contact us | help

Explanation / Answer

moles of Na2S2O3 = 34.2 x 0.380 / 1000 = 0.0130 mol

from the equation :

2 mol S2O32-    -----------------> 1 mol of I3-

0.0130 mol S2O32-   ---------------> ??

moles of I3- = 0.0130 x 1 / 2 = 6.498 x 10^-3 mol

moles = molarity x volume

6.498 x 10^-3 = Molarity x 0.025

Molarity of I3- = 0.260 M

Related Questions

Navigate

• Browse (All)
• Browse G
• Subjects

---

---

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