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
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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...
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Now, calculate the concentration of apotransferrin present in
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La=1.8•10^-5
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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...
Question 8 1 pts The titration of 5.00 mL of an HCl solution of unknown concentration requires 4.96 mL of a 0.9581 M NaOA solution to reach the equivalence point. What is the concentration of the unknown HCI solution? 0.950M 0.966 M 0.958M 23.76M
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a student was conducting a titration
La=1.8•10^-5
48.92 mL of a 0.1089 M solution of acetic acid to a 200 ml beaker. The student then added 3 ant then added 35.8 mL of deionized water. After adding the water to the solution, the mixture was stirred to ensure proper mixing of solution Calculate the theoretical phat the following points of calibration curve. a) Initial pl, before addition of any NaOH? Be sure to consider the change in volume due to...
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