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4. A researcher wants to know how much orange food dye is present in their daily Orange Crush soda, a bubble beverage that is in fact orange in color. They decide to use visible spectroscopy. They make a stock solution of the same orange dye present in the soda at a concentration of 1.50 x 10-² M. a. In order to get the absorbance in an intensity range that can be measured by the instrument, they need to create solutions between 1.50 x 105 and 7.50 x 105 M. They have 100 mL volumetric flasks and a variety of volumetric pipettes available. What volumes are needed to make these two solutions? b. They will need to determine an appropriate wavelength to monitor. What wavelengths do you expect this orange drink to absorb? C. oko After running a visible absorbance scan, they determine an appropriate wavelength to monitor and create a calibration curve. The linear relationship between absorbance and orange dye concentration is described by the equation y = 15906 x +0.00034. The orange crush solution is measured at the same wavelength and has an absorbance reading of 0.654. What is the concentration of orange dye in this soda?

4. A researcher wants to know how much orange food dye is present in their daily Orange Crush soda, a bubble beverage that is in fact orange in color. They decide to use visible spectroscopy. They make a stock solution of the same orange dye present in the soda at a concentration of 1.50 x 10-² M. a. In order to get the absorbance in an intensity range that can be measured by the instrument, they need to create solutions between 1.50 x 105 and 7.50 x 105 M. They have 100 mL volumetric flasks and a variety of volumetric pipettes available. What volumes are needed to make these two solutions? b. They will need to determine an appropriate wavelength to monitor. What wavelengths do you expect this orange drink to absorb? C. oko After running a visible absorbance scan, they determine an appropriate wavelength to monitor and create a calibration curve. The linear relationship between absorbance and orange dye concentration is described by the equation y = 15906 x +0.00034. The orange crush solution is measured at the same wavelength and has an absorbance reading of 0.654. What is the concentration of orange dye in this soda?

Chemistry
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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4. A researcher wants to know how much orange food dye is present in their daily Orange Crush soda, a bubble beverage that is in fact orange in color. They decide to use visible spectroscopy. They make a stock solution of the same orange dye present in the soda at a concentration of 1.50 x 10-2 M. a. In order to get the absorbance in an intensity range that can be measured by the instrument, they need to create solutions between 1.50 x 105 and 7.50 x 10-5 M. They have 100 mL volumetric flasks and a variety of volumetric pipettes available. What volumes are needed to make these two solutions? b. They will need to determine an appropriate wavelength to monitor. What wavelengths do you expect this orange drink to absorb? C. After running a visible absorbance scan, they determine an appropriate wavelength to monitor and create a calibration curve. The linear relationship between absorbance and orange dye concentration is described by the equation y = 15906 x +0.00034. The orange crush solution is measured at the same wavelength and has an absorbance reading of 0.654. What is the concentration of orange dye in this soda?
Transcribed Image Text:4. A researcher wants to know how much orange food dye is present in their daily Orange Crush soda, a bubble beverage that is in fact orange in color. They decide to use visible spectroscopy. They make a stock solution of the same orange dye present in the soda at a concentration of 1.50 x 10-2 M. a. In order to get the absorbance in an intensity range that can be measured by the instrument, they need to create solutions between 1.50 x 105 and 7.50 x 10-5 M. They have 100 mL volumetric flasks and a variety of volumetric pipettes available. What volumes are needed to make these two solutions? b. They will need to determine an appropriate wavelength to monitor. What wavelengths do you expect this orange drink to absorb? C. After running a visible absorbance scan, they determine an appropriate wavelength to monitor and create a calibration curve. The linear relationship between absorbance and orange dye concentration is described by the equation y = 15906 x +0.00034. The orange crush solution is measured at the same wavelength and has an absorbance reading of 0.654. What is the concentration of orange dye in this soda?
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