Experiment 1 - 2 O 4 8. Alcohol is added in order to: make...

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Experiment 1 1. The object of this experiment is to: synthesize an iron coordination complex. 2. In coordination complexes the charge on the metal is indicated by Roman Numerals in parenthesis. 3. The number of potassium ions in the complex to be synthesized is: 3 4. The oxidation state of iron in K 3 [Fe(C 2 O 4 ) 3 ]·3H 2 O is: +3 5. During the early stages of the synthesis it is important to stir the mixture continuously so as to: prevent the solution from bumping. 6. In the preparation of K 3 [Fe(C 2 O 4 ) 3 ]·3H 2 O , the Fe 2+ is oxidized to Fe 3+ by: Hydrogen Peroxide 7. The yellow precipitate that forms in the early stages of the synthesis is: FeC
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Unformatted text preview: 2 O 4 8. Alcohol is added in order to: make K 3 [Fe(C 2 O 4 ) 3 ]·3H 2 O less soluble. 9. The formation of a brown precipitate during the course of the synthesis is due to: Fe(OH) 3 (s). 10. The K 3 [Fe(C 2 O 4 ) 3 ]·3H 2 O is finally isolated by: vacuum filtration. 11. To facilitate precipitation of K 3 [Fe(C 2 O 4 ) 3 ]·3H 2 O the procedure calls for placing the green solution in an ice bath for: 20 minutes. 12. In writing up this experiment you should: record the quantities that you actually used. 13. Conversion of the ferrous ion to the ferric ion is accomplished by a(n): . redox reaction....
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This note was uploaded on 03/30/2009 for the course CHEM 112 taught by Professor Hardy during the Spring '08 term at UMass (Amherst).

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