The Fe2+ (55.845 g/mol) content of a 2.433 g steel sample dissolved in 50.00 mL of an acidic solution was determined by tiration with a standardized 0.120 M potassium permanganate (KMNO,, 158.034 g/mol) solution. The titration required 31.06 mL to reach the end point. What is the concentration of iron in the steel sample? Express your answer as grams of Fe per gram of steel. MnO, + 8 H* + 5 Fe2+ = Mn²+ + 5 Fe3+ + 4 H,O concentration: g Fe/g ste
The Fe2+ (55.845 g/mol) content of a 2.433 g steel sample dissolved in 50.00 mL of an acidic solution was determined by tiration with a standardized 0.120 M potassium permanganate (KMNO,, 158.034 g/mol) solution. The titration required 31.06 mL to reach the end point. What is the concentration of iron in the steel sample? Express your answer as grams of Fe per gram of steel. MnO, + 8 H* + 5 Fe2+ = Mn²+ + 5 Fe3+ + 4 H,O concentration: g Fe/g ste
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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![The Fe²⁺ (55.845 g/mol) content of a 2.433 g steel sample dissolved in 50.00 mL of an acidic solution was determined by titration with a standardized 0.120 M potassium permanganate (KMnO₄, 158.034 g/mol) solution. The titration required 31.06 mL to reach the end point. What is the concentration of iron in the steel sample? Express your answer as grams of Fe per gram of steel.
Reaction:
\[ \text{MnO}_4^- + 8 \text{H}^+ + 5 \text{Fe}^{2+} \rightarrow \text{Mn}^{2+} + 5 \text{Fe}^{3+} + 4 \text{H}_2\text{O} \]
Concentration: [___________] g Fe/g steel
Instructions:
- Calculate the number of moles of KMnO₄ used in the titration.
- Use the balanced chemical equation to find the moles of Fe²⁺.
- Convert moles of Fe²⁺ to grams.
- Calculate the concentration of Fe in the steel as grams of Fe per gram of steel.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F588cd5fd-0b28-4842-884c-b2a6ae2e7709%2F68186099-5408-4049-bc05-6cdfc35dfd2a%2F189sgy6_processed.jpeg&w=3840&q=75)
Transcribed Image Text:The Fe²⁺ (55.845 g/mol) content of a 2.433 g steel sample dissolved in 50.00 mL of an acidic solution was determined by titration with a standardized 0.120 M potassium permanganate (KMnO₄, 158.034 g/mol) solution. The titration required 31.06 mL to reach the end point. What is the concentration of iron in the steel sample? Express your answer as grams of Fe per gram of steel.
Reaction:
\[ \text{MnO}_4^- + 8 \text{H}^+ + 5 \text{Fe}^{2+} \rightarrow \text{Mn}^{2+} + 5 \text{Fe}^{3+} + 4 \text{H}_2\text{O} \]
Concentration: [___________] g Fe/g steel
Instructions:
- Calculate the number of moles of KMnO₄ used in the titration.
- Use the balanced chemical equation to find the moles of Fe²⁺.
- Convert moles of Fe²⁺ to grams.
- Calculate the concentration of Fe in the steel as grams of Fe per gram of steel.
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