Chem152_Calib_Report_060109 (1)

Chem152_Calib_Report_060109 (1) - Name and ID Number:...

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Name and ID Number: Section: AS Lab Partner: Total Points = 60 pts (5 pts notebook, 55 pts template) DATA, GRAPHS AND CALCULATIONS 1 pt Creating the calibration curve: Ferroin: Concentration (M) Absorbance 1.25E-05 0.09 2.40E-05 0.13 2 pts 3.70E-05 0.37 5.00E-05 0.50 6.25E-05 0.63 Purpose and Method Clearly state the purpose of this part of the lab. Explain how this is accomplished in this experiment. What calculations do you need to perform? What measurements will be made? [Do not provide experimental details here]. How do you go from calculated/measured values to accomplishing stated purpose? ( 10 pts ) Purpose- The main purpose of this lab is to prepare standard solutions from a stock solution and to use the standard solutions to obtain a calibration curve for use in determining the concentration of an unknown solution. Method - In this experiment, I will prepare five ferroin solutions in cuvettes each with different increments of 1.25e5M concentration. In the second part of the experiment I will need to prepare an Iron sample for the use in part three of the lab. In the last part of the experiment I need to take the solutions to the spectrometer to measure the absorbance at the same wavelegnth. λ max = 511.18 nm Experiment 2 : Calibration Curves and an Application of Beer's Law By signing below, you certify that you have not falsified data, that you have not plagiarized any part of this lab report, and that all calculations and responses other than the reporting of raw data are your own independent work. Failure to sign this declaration will cost you 5 points. Signature:
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4 pts Slope of Absorbance versus concentration graph 11538 1 pt y-intercept of Absorbance versus concentration graph -0.09 1 pt Detailed calibration equation: y=11538x-0.0852 2pts Determining theAmount of Iron in an Iron Tablet
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Chem152_Calib_Report_060109 (1) - Name and ID Number:...

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