A 750.0-mg sample of iron ore was dissolved in acid and treated to oxidize all the iron to ferric ion. After destroying any remaining oxidizing agent, excess KI was added. The liberated I2 required 28.50 mL of 0.07500 M Na2S2O3 for titration. What is the % w/w Fe in the sample? The reactions involved for this titration are the following:2Fe3+ + I- ? 2Fe2+ + I2I2 + 2S2O32- ? 2I- + S4O62- 3. A 750.0-mg sample of iron ore was dissolved in acid and treated to oxidize all the iron toferric ion. After destroying any remaining oxidizing agent, excess Kl was added. Theliberated I, required 28.50 ml of 0.07500 M Na,S,0, for titration. What is the % w/w Fein the sample? The reactions involved for this titration are the following:2Fe* +l> 2Fe* +1,I, + 25,0, → 21 + S,02

Normality of Na2S2O3 used = 0.07500 M Volume of Na2S2O3 used to titrate liberated iodine = 28.50 mL…

Answered: A 750.0-mg sample of iron ore was…

Chemistry by OpenStax (2015-05-04)

1st Edition

ISBN:9781938168390

Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser

Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser

Chapter15: Equilibria Of Other Reaction Classes

Section: Chapter Questions

Problem 115E: A volume of 50 mL of 1.8 M NH3 is mixed with an equal volume of a solution containing 0.95 g of...

See similar textbooks

Related questions

Question

A 750.0-mg sample of iron ore was dissolved in acid and treated to oxidize all the iron to ferric ion. After destroying any remaining oxidizing agent, excess KI was added. The liberated I₂required 28.50 mL of 0.07500 M Na₂S₂O₃ for titration. What is the % w/w Fe in the sample? The reactions involved for this titration are the following:

2Fe³⁺ + I^- ? 2Fe²⁺ + I₂

I₂ + 2S₂O₃^2- ? 2I- + S₄O₆^2-

3. A 750.0-mg sample of iron ore was dissolved in acid and treated to oxidize all the iron to
ferric ion. After destroying any remaining oxidizing agent, excess Kl was added. The
liberated I, required 28.50 ml of 0.07500 M Na,S,0, for titration. What is the % w/w Fe
in the sample? The reactions involved for this titration are the following:
2Fe* +l> 2Fe* +1,
I, + 25,0, → 21 + S,02

Expert Solution

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions