UnroundedRoundedε∗,L/μmolε∗,L/μmol0.02598250.0260 heres data:TZ #ConcentrationAbsorbance at 430 nmnm133.64800.931225.23600.757316.84200.21048.412000.13754.206000.122 Report the absorbance reading obtained for your TZ unknown at 430 nm. Using the calculated effective molar absorptivity of TZ fromthe Beer's Law plot you already generated, calculate the concentration of your TZ unknown.TZ Unknown Absorbance at 430 nmConcentration of TZ Unknown (M)III. 7.We will now deterdetermined by cothe dispensary staPercent Error of24.9666X Incorrect0.749Unrounded24.9666 ASUBMITSOLVETo calculate the concentration of your unknown,remember to use the linear trendline obtained from theBeer's Law plot. The absorbance of the unknown isyour y-value, and you are solving for yourconcentration (or the x-value).Try again.Rounded3unknown concentration. Your percent error isoncentration of that sample (which is known byconcentrationx 100 molar absorptivity (represented by the slope of the linear trendline), which has units of μmol in this case.Absorbance0.80.60.40.21ILO5Beer's Law Plot of TZ at 430 nm1015430 nm: y = 0.0259825 x20Concentration (μM)253035П+

Given data:TZ Unknown absorbance at 430 nm =0.749To determine:Concentration of TX Unknown

Report the absorbance reading obtained for your TZ unknown at 430 nm. Using the calculated effective molar absorptivity of TZ from the Beer's Law plot you already generated, calculate the concentration of your TZ unknown. TZ Unknown Absorbance at 430 nm Concentration of TZ Unknown (M) 0.749 Unrounded 24.9666 Rounded 3

Report the absorbance reading obtained for your TZ unknown at 430 nm. Using the calculated effective molar absorptivity of TZ from the Beer's Law plot you already generated, calculate the concentration of your TZ unknown. TZ Unknown Absorbance at 430 nm Concentration of TZ Unknown (M) 0.749 Unrounded 24.9666 Rounded 3

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter26: Molecular Absorption Spectrometry

Section: Chapter Questions

Problem 26.32QAP

See similar textbooks

	Unrounded	Rounded
ε∗,L/μmolε∗,L/μmol	0.0259825	0.0260

TZ #	Concentration	Absorbance at 430 nmnm
1	33.6480	0.931
2	25.2360	0.757
3	16.8420	0.210
4	8.41200	0.137
5	4.20600	0.122

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