Experiment-A8: Spectrophotometry of Cobalt(Pre-laboratory Exercises1. (a) Define Beer's law and give the mathematical equation (specify each symbol in the equation).concentration of achemical SolutionBeer's Law states that thein the followingA = Ebcis directly proportional to its absorption of light& can be calculatedformula(b) Briefly explain what Beer's plot is and how do you obtain the Beer's constant (k) from the plot.is a straight line with _ay-interceptBeer's plotof zero & a slope of ab oreb. It representsthe absorptunitythe lengthAbsorbance 8 can be calculate bymultiplyingConstant by the path length then dinding that value by the2. The following solutions are prepared from 0.200 MNICI, and their absorbance measured at 725 nm.Solution #12345Volume (mL) of0.200 M NiCh1.002.003.004.00pride5.00Volume (mL)of H₂O4.003.002.001.000.00INICI](a) Calculate the molar concentration of NiCl₂ in each solution 1-5.Absorbanceat 725 nm0.1050.2100.3150.4200.52572

Given,SolutionVolume (mL) of 0.200M NiCl2Volume (mL) of H2O[NiCl2]Absorbance at…

Pre-laboratory Exercises 1. (a) Define Beer's law and give the mathematical equation (specify each symbol in the equation). Beer's Law states that the concentration of a chemical solution is directly proportional to its absorption of light & can be calculated in the following formula A= EbC ay-htercept (b) Briefly explain what Beer's plot is and how do you obtain the Beer's constant (k) from the plot. Beer's plot is a straight line with the absorptunty of zero & a slope of ab oreb. It represents Absorbance 8 can be calculate by multiplying Constant by the path length then dinding that value by the length 2. The following solutions are prepared from 0.200 MNICI, and their absorbance measured at 725 nm. Solution # 1 2 3 4 5 Volume (mL) of 0.200 MNICI 1.00 2.00 3.00 4.00 5.00 Volume (mL) of H-O 4.00 3.00 2.00 1.00 0.00 [NiCh] Absorbance at 725 nm (a) Calculate the molar concentration of NiCl₂ in each solution 1-5. 0.105 0.210 0.315 0.420 0.525

Pre-laboratory Exercises 1. (a) Define Beer's law and give the mathematical equation (specify each symbol in the equation). Beer's Law states that the concentration of a chemical solution is directly proportional to its absorption of light & can be calculated in the following formula A= EbC ay-htercept (b) Briefly explain what Beer's plot is and how do you obtain the Beer's constant (k) from the plot. Beer's plot is a straight line with the absorptunty of zero & a slope of ab oreb. It represents Absorbance 8 can be calculate by multiplying Constant by the path length then dinding that value by the length 2. The following solutions are prepared from 0.200 MNICI, and their absorbance measured at 725 nm. Solution # 1 2 3 4 5 Volume (mL) of 0.200 MNICI 1.00 2.00 3.00 4.00 5.00 Volume (mL) of H-O 4.00 3.00 2.00 1.00 0.00 [NiCh] Absorbance at 725 nm (a) Calculate the molar concentration of NiCl₂ in each solution 1-5. 0.105 0.210 0.315 0.420 0.525

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter4: Least-squares And Calibration Methods

Section: Chapter Questions

Problem 1P

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