Report table 2: Determination of Molar absorptivity of K2CrO4ppm of K2CrO4 in "DILUTE STOCK (5mL/50mL)"=1.5012Molarity of K:CrO4 in "DILUTE STOCK(5mL/50mL)" = 7.7319× 10^-3Peak wavelengthλmax=372 nmFrom singlewavelengthvaluesPeak AbsorbanceFrom spectrumA = 0.4878=>1234A= 0.370A=0.434A= 0.487A= 0.3478=8=8=1.2864×10^61.5171×10^61.7023×10 6 1.20642×10^6Average & (for the 4readings)Standard deviation of a95% Confidence intervalof a= 1.428055×10^6Show sample calculation (for solution 1): = A/b.c =Molar Absorption= 0,370/(3.72*10^-5)(7.7319× 10^-3)= 1.2864×10^6 M^-1cm^-1

The objective of the question is to calculate the molar absorption for the solution 1.It is given…

Report table 2: Determination of Molar absorptivity of K:CrO4 ppm of K:CrO4 in "DILUTE STOCK (5mL/50mL)"=1.5012 Molarity of K-Croin "DILUTE STOCK(5mL/50mL)" = 7.7319x 10^-3 Peak wavelength Peak Absorbance From spectrum λmax=372 nm A=0.487 8=> 1 2 3 4 A=0.370 A=0.434 A=0.487 A=0.347 From single wavelength values 8= 8= 1.2864×10 6 1.5171×10^6 1.7023×10 6 1.20642×10^6 Average & (for the 4 readings) Standard deviation of 1.428055×10^6 95% Confidence interval of ε Show sample calculation (for solution 1): = A/b.c = Molar Absorption= 0,370/(3.72×10^-5)(7.7319× 10^-3)= 1.2864×10^6 M^-1 cm^-1

Report table 2: Determination of Molar absorptivity of K:CrO4 ppm of K:CrO4 in "DILUTE STOCK (5mL/50mL)"=1.5012 Molarity of K-Croin "DILUTE STOCK(5mL/50mL)" = 7.7319x 10^-3 Peak wavelength Peak Absorbance From spectrum λmax=372 nm A=0.487 8=> 1 2 3 4 A=0.370 A=0.434 A=0.487 A=0.347 From single wavelength values 8= 8= 1.2864×10 6 1.5171×10^6 1.7023×10 6 1.20642×10^6 Average & (for the 4 readings) Standard deviation of 1.428055×10^6 95% Confidence interval of ε Show sample calculation (for solution 1): = A/b.c = Molar Absorption= 0,370/(3.72×10^-5)(7.7319× 10^-3)= 1.2864×10^6 M^-1 cm^-1

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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