The protein apotransferrin binds two Fe(III) ions for cell transport. A 5.00 mL solution of apotransferrin...
The protein apotransferrin binds two Fe(III) ions for cell transport. A 5.00 mL solution of apotransferrin is titrated with 103 μL of a 1.45 M Fe(III) solution. The initially colorless solution turns red as the Fe(III) is add, and the color change is measured with a spectrophotometer. Explain why there is a difference in the spectrophotometric response before and after the equivalence point of the titration.
1) Classify the statements as describing the titration before or after the equivalence point. A) no binding sites are available for Fe(III) B) The color change is minimal C) The color change is dramatic D) All Fe(III) addad will bind to the protein
2) Calculate the concentration of apotransferrin present in the original 5.00 mL solution.
concentration= M apotransferrin?
please help i will rate your answer
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The protein apotransferrin binds two Fe(III) ions for cell
transport. A 5.00 mL solution of apotransferrin...
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Before the equivalence point: After the equvalence point: Now, calculate the concentration of apotransferrin present in...
Before the equivalence
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After the equvalence point:
Now, calculate the concentration of apotransferrin present in
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NH3). Determine which region on the titration curve the
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Please help!
Ligand X forms a complex with both cobalt and copper, cach of which has a maximum absorbance at 510 nm and 645 nm, respectively. A 0.217 g sample containing cobalt and copper was dissolved and diluted to a volume of 100.0 mL. A solution containing ligand X was added to a 50.0 mL aliquot of the sample solution and diluted to a final volume of 100.0 mL. The measured absorbance of the unknown solution was 0.493 at 510...
Before the equivalence
point:
After the equvalence point:
Now, calculate the concentration of apotransferrin present in
the original 1.00 mL solution. ________ M Apotransferrin
The protein apotransferrin binds two Fe(lll) ions for cell transport. Consider when a 1.00 mL solution of apotransferrin is titrated with 102 muL. of a 1.72 M Fe(lll) solution. The initially colorless solution turns red, and the color change can be measured with a spectrophotometer. First, explain why there is a difference in spectrophotometric response during...
3. Calculate in the titrant. 4. Another 1,00 mL of the NaOH solution is added after the equivalence point. Calculate e reaction mixture. in the 5. Suppose 10.00 mL of water was added to the HCl solution before the titration was begun. How would your answers to questions 1-3 change? EXPERIMENT 10 Name QUANTITATIVE ANALYIS III STANDARDIZATION OF A STRONG BASE SOLUTION PRE-LAB EXERCISES Titration of 5.00 mL of a solution labeled 0.237 6 M HCl requires addition of 40.02...
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• CIU TEXAS INSTRUM 2. A 50.00 ml sample of solution containing Fe?ions is titrated with a 0.0216 M KMnO4 solution. It required 20.62 ml of the KMnO4 solution to oxidize all the Fe? ions to Fe ions by the reaction: MnO4 (aq) + Fe? ) -------> Mn(ed) Felco (unbalanced) a) What was the concentration of Fel.ions in the sample solution? b) What volume of 0.0150 M K2Cr2O7 solution would it take to do the same titration? The reaction is:...
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is titrated with 0.20 M HCl(aq) (adding HCl to
NH3). Determine which region on the titration curve the
mixture produced is in, and the pH of the mixture at each volume of
added acid.Kb of NH3 is 1.8 ×
10−5.Henderson–Hasselbalch equation:Part a):1) After adding 10 mL of the HCl solution, the
mixture is [ Select ] ["at", "before", "after"] the
equivalence point on the titration curve.2) The pH of the solution after...
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