Chem152_Calib_Report_092110

Chem152_Calib_Report_092110 - Name: ID Number: Section: Lab...

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Name: Section: ID Number: Lab Partner: Total Points = 60 pts (5 pts notebook, 55 pts template) DATA, GRAPHS AND CALCULATIONS 512.2 nm 1 pt Creating the calibration curve: Ferroin: Concentration (M) Absorbance 6.25E-05 0.720 5.00E-05 3.000 2 pts 3.75E-05 0.450 2.50E-05 0.310 1.25E-05 0.180 λ max: 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: roughly divided 1 for the goal and 3 each for addressing each of the three parts of the experiment. ) The purpose in this experiment is to learn how to prepare several feeroin solution in standard solution. Also, BY using the standard solution of forroin, we can get a calibration curve that used for determing an unknown solution. We first need to prepare 5 standard solution by the rule M1V1 = M2V2 Next, using the absorbance spectrosopy, a plot of Abs vs concentration can be determined. Acalibration rquation is Abs = slope * [concentration] + y-intercept Thrconcentration of unknown solution then can be found Finally, we determine the amount of iron in an suppelment tablet by dissolving a mass of crushed iron tablet in HCl and H2O to form a ferroin complex 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
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This note was uploaded on 11/05/2010 for the course CHEM 152 taught by Professor Chiu during the Spring '08 term at University of Washington.

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Chem152_Calib_Report_092110 - Name: ID Number: Section: Lab...

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