Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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![**Titration Problem**
A solution of sodium thiosulfate, \( \text{Na}_2\text{S}_2\text{O}_3 \), is 0.4203 M. 8.52 mL of this solution reacts with 26.21 mL of \( \text{I}_2 \) solution. What is the molarity of the \( \text{I}_2 \) solution?
Chemical Reaction:
\[
\text{I}_2 + 2\text{Na}_2\text{S}_2\text{O}_3 \rightarrow \text{Na}_2\text{S}_4\text{O}_6 + 2\text{NaI}
\]
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---
29.07 mL of the \( \text{I}_2 \) solution from above is required to titrate a sample containing \( \text{As}_2\text{O}_3 \). Calculate the mass of \( \text{As}_2\text{O}_3 \) (197.8 g/mol) in the sample.
Chemical Reaction:
\[
\text{As}_2\text{O}_3 + 5\text{H}_2\text{O} + 2\text{I}_2 \rightarrow 2\text{H}_3\text{AsO}_4 + 4\text{HI}
\]
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**Discussion Status:** Closed](https://content.bartleby.com/qna-images/question/9d7f79bc-69ba-4efa-950e-7604f8442ee4/06c80310-665e-4fd1-b750-a5a78fb880d5/p5pnzjm_processed.jpeg)
Transcribed Image Text:**Titration Problem**
A solution of sodium thiosulfate, \( \text{Na}_2\text{S}_2\text{O}_3 \), is 0.4203 M. 8.52 mL of this solution reacts with 26.21 mL of \( \text{I}_2 \) solution. What is the molarity of the \( \text{I}_2 \) solution?
Chemical Reaction:
\[
\text{I}_2 + 2\text{Na}_2\text{S}_2\text{O}_3 \rightarrow \text{Na}_2\text{S}_4\text{O}_6 + 2\text{NaI}
\]
**Submit Answer**
Tries 0/99
---
29.07 mL of the \( \text{I}_2 \) solution from above is required to titrate a sample containing \( \text{As}_2\text{O}_3 \). Calculate the mass of \( \text{As}_2\text{O}_3 \) (197.8 g/mol) in the sample.
Chemical Reaction:
\[
\text{As}_2\text{O}_3 + 5\text{H}_2\text{O} + 2\text{I}_2 \rightarrow 2\text{H}_3\text{AsO}_4 + 4\text{HI}
\]
**Submit Answer**
Tries 0/99
**Discussion Status:** Closed
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