I Review I Constants I Periodic Table Stannous chloride solution, SnCl2 (aq), is used as a reducing agent in analytical chemistry. It is susceptible to oxidation of the stannous ion, Sn²+, to the stannic ion, Sn+, by oxygen in air. Thus, the solution must be used immediately or stabilized to extend shelf life. ΑΣφ OA chemical reaction does not occur for this question. Submit Part C The excess Sn?+ is removed by adding the mercuric ion, Hg?+ (aq), forming the mercurous ion, Hg22+. Write the net ionic equation for this reaction. Figure 1 of 1> Express you answer as a chemical equation. • View Available Hint(s) Titration apparatus ΑΣΦ ? Standard solution (oxidizing agent) OA chemical reaction does not occur for this question. Submit Dissolved ore solution Provide Feedback Next >

Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
Publisher:Skoog
Chapter13: Titrations In Analytical Chemistry
Section: Chapter Questions
Problem 13.5QAP
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15:16 Tue May 4
Done <
AA
A session.masteringchemistry.com
<Problem Set #9 (Ch 19) Adaptive Follow-Up
Analytical Use of Stannous Chloride Solutions
Item 7
>
I Review I Constants I Periodic Table
Stannous chloride solution, SnCl2 (aq), is used as a
reducing agent in analytical chemistry. It is susceptible to
oxidation of the stannous ion, Sn²+, to the stannic ion,
Sn+, by oxygen in air. Thus, the solution must be used
immediately or stabilized to extend shelf life.
?
O A chemical reaction does not occur for this question.
Submit
Part C
The excess Sn²+ is removed by adding the mercuric ion, Hg2+ (aq), forming the mercurous ion,
Hg,2+. Write the net ionic equation for this reaction.
Figure
1 of 1
Express you answer as a chemical equation.
• View Available Hint(s)
Titration apparatus
?
- Standard solution
(oxidizing agent)
OA chemical reaction does not occur for this question.
Dissolved ore solution
Submit
Provide Feedback
Next >
Transcribed Image Text:15:16 Tue May 4 Done < AA A session.masteringchemistry.com <Problem Set #9 (Ch 19) Adaptive Follow-Up Analytical Use of Stannous Chloride Solutions Item 7 > I Review I Constants I Periodic Table Stannous chloride solution, SnCl2 (aq), is used as a reducing agent in analytical chemistry. It is susceptible to oxidation of the stannous ion, Sn²+, to the stannic ion, Sn+, by oxygen in air. Thus, the solution must be used immediately or stabilized to extend shelf life. ? O A chemical reaction does not occur for this question. Submit Part C The excess Sn²+ is removed by adding the mercuric ion, Hg2+ (aq), forming the mercurous ion, Hg,2+. Write the net ionic equation for this reaction. Figure 1 of 1 Express you answer as a chemical equation. • View Available Hint(s) Titration apparatus ? - Standard solution (oxidizing agent) OA chemical reaction does not occur for this question. Dissolved ore solution Submit Provide Feedback Next >
15:16 Tue May 4
Done <
AA
A session.masteringchemistry.com
<Problem Set #9 (Ch 19) Adaptive Follow-Up
Analytical Use of Stannous Chloride Solutions
Item 7
>
I Review I Constants I Periodic Table
Stannous chloride solution, SnCl2 (aq), is used as a
reducing agent in analytical chemistry. It is susceptible to
oxidation of the stannous ion, Sn²+, to the stannic ion,
Sn+, by oxygen in air. Thus, the solution must be used
immediately or stabilized to extend shelf life.
Oxidation of iron(III) by titration with stannous chloride
Iron ore samples are pretreated by dissolving the sample in acid, then reducing the Fe3+ to Fe²+ with
stannous chloride. The excess reducing agent is then oxidized by treatment with HgCl, before the
sample is titrated with a standard solution of an oxidizing agent.
(Figure 1)
Part B
In the determination of iron in an ore, the ore (mostly Fe2 O3) is first dissolved in HCl(aq). A slight
excess of Sn²+ is added to reduce Fe+ to Fe?+. Enter the net ionic equation for the redox reaction.
Express your answer as a chemical equation.
Figure
1 of 1
• View Available Hint(s)
Titration apparatus
ΑΣφ
?
- Standard solution
(oxidizing agent)
O A chemical reaction does not occur for this question.
Submit
Dissolved ore solution
Part C
The excess Sn²+ is removed by adding the mercuric ion, Hg2+ (aq), forming the mercurous ion,
Hg,2+. Write the net ionic equation for this reaction.
Transcribed Image Text:15:16 Tue May 4 Done < AA A session.masteringchemistry.com <Problem Set #9 (Ch 19) Adaptive Follow-Up Analytical Use of Stannous Chloride Solutions Item 7 > I Review I Constants I Periodic Table Stannous chloride solution, SnCl2 (aq), is used as a reducing agent in analytical chemistry. It is susceptible to oxidation of the stannous ion, Sn²+, to the stannic ion, Sn+, by oxygen in air. Thus, the solution must be used immediately or stabilized to extend shelf life. Oxidation of iron(III) by titration with stannous chloride Iron ore samples are pretreated by dissolving the sample in acid, then reducing the Fe3+ to Fe²+ with stannous chloride. The excess reducing agent is then oxidized by treatment with HgCl, before the sample is titrated with a standard solution of an oxidizing agent. (Figure 1) Part B In the determination of iron in an ore, the ore (mostly Fe2 O3) is first dissolved in HCl(aq). A slight excess of Sn²+ is added to reduce Fe+ to Fe?+. Enter the net ionic equation for the redox reaction. Express your answer as a chemical equation. Figure 1 of 1 • View Available Hint(s) Titration apparatus ΑΣφ ? - Standard solution (oxidizing agent) O A chemical reaction does not occur for this question. Submit Dissolved ore solution Part C The excess Sn²+ is removed by adding the mercuric ion, Hg2+ (aq), forming the mercurous ion, Hg,2+. Write the net ionic equation for this reaction.
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