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11 Nov 2019
Can anyone help me answer this postlab? All help is appreciated! Thank you
POSTLAB-SPECTROSCOPIC ANALYSIS OF COPPER IN A PENNY Use PEN only to fill out this form; cross out any mistakes with a single line only. 1. Referring to the introduction for this experiment, why is a Beer's Law calibration curve required/used in the analysis for this experiment? Circle all that apply. To establish the quantitative relationship between absorbance and concentration. b. a. To determine the wavelength of maximum absorbance for the species (lambda max, λ max). To determine if any outliers are present in the data collected. d. c. To obtain an average of the data collected and improve the accuracy of results. To determine the chemical identity of the species being analyzed. e. 2. All of the following can be obtained from a Beer's Law calibration curve except The wavelength of maximum absorbance for the species (lambda max, Amax). b. a. The quantitative relationship between absorbance and concentration. The presence of any outliers in the experimental data. c. d. The absorption coefficient for the species at that particular wavelength. The amount of ammonium hydroxide added to your penny solution was not controlled (i not add "stoichiometric" amounts). Discuss what would happen to its absorbance value, and explain why, if the amount added was too low and if too high. Be sure to cite the specific observations from your notebook that support your conclusions. (Assume the mark on the volumetric flask was not overshot in either scenario.) 3. a. too low: b. too high:
Can anyone help me answer this postlab? All help is appreciated! Thank you
POSTLAB-SPECTROSCOPIC ANALYSIS OF COPPER IN A PENNY Use PEN only to fill out this form; cross out any mistakes with a single line only. 1. Referring to the introduction for this experiment, why is a Beer's Law calibration curve required/used in the analysis for this experiment? Circle all that apply. To establish the quantitative relationship between absorbance and concentration. b. a. To determine the wavelength of maximum absorbance for the species (lambda max, λ max). To determine if any outliers are present in the data collected. d. c. To obtain an average of the data collected and improve the accuracy of results. To determine the chemical identity of the species being analyzed. e. 2. All of the following can be obtained from a Beer's Law calibration curve except The wavelength of maximum absorbance for the species (lambda max, Amax). b. a. The quantitative relationship between absorbance and concentration. The presence of any outliers in the experimental data. c. d. The absorption coefficient for the species at that particular wavelength. The amount of ammonium hydroxide added to your penny solution was not controlled (i not add "stoichiometric" amounts). Discuss what would happen to its absorbance value, and explain why, if the amount added was too low and if too high. Be sure to cite the specific observations from your notebook that support your conclusions. (Assume the mark on the volumetric flask was not overshot in either scenario.) 3. a. too low: b. too high:
Casey DurganLv2
18 Sep 2019