A purple solution is prepared by mixing 5.00 mL of the blue dye solution with 6.25 mL of red dye solution. The calibration curve for each color is provided. Measurement Result Measurement Blue dye stock solution (M) Result 0.1944 M Red dye stock solution (M) 0.2015 M Absorbance at 630 nm 0.00697 0.00193 Absorbance at 500 nm Calibration curve Calibration curve y=0.0682x y=0.0170x Part: 0/4 Part 1 of 4 Determine the theoretical molar concentration of each dye in the mixture. Round your answer to 3 significant digits. [Blue theoretical M [Red theoretical M X Part: 1/4 Part 2 of 4 Using the absorbance and calibration curve for each dye, calculate the experimental molar concentration of each dye in the mixture. Round your answer to 3 significant digits. [Blue] M E Submit Terms of Use | Privacy Center

A purple solution is prepared by mixing 5.00 mL of the blue dye solution with 6.25 mL of red dye solution. The calibration curve for each color is provided. Measurement Result Measurement Blue dye stock solution (M) Result 0.1944 M Red dye stock solution (M) 0.2015 M Absorbance at 630 nm 0.00697 0.00193 Absorbance at 500 nm Calibration curve Calibration curve y=0.0682x y=0.0170x Part: 0/4 Part 1 of 4 Determine the theoretical molar concentration of each dye in the mixture. Round your answer to 3 significant digits. [Blue theoretical M [Red theoretical M X Part: 1/4 Part 2 of 4 Using the absorbance and calibration curve for each dye, calculate the experimental molar concentration of each dye in the mixture. Round your answer to 3 significant digits. [Blue] M E Submit Terms of Use | Privacy Center

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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SPECTROPHOTOMETRY Two groups in a BIO 120 lab extracted a blue-violet pigment from mayana plant which was to be used as a natural dye for Philippine textiles. To determine the concentration of the pigment isolated, each group made a standard curve using commercially available indigo dye in dimethylsulfoxide (DMSO). The following data were obtained by the two groups: Table 4. Absorbance readings of standard solutions of varying concentrations of indigo dye in DMSO. Pure DMSO 0.115 Standard solutions (ppm) Group 1 Data Group 2 Data 0.2 0.398 0.224 0.4 0.563 0.437 0.6 0.732 0.603 0.8 0.833 0.811 1.0 1.008 0.966 1. Show the constructed standard curves of the two groups with proper figure titles. 2. Which of the two groups generated a better standard curve? Justify your answer by providing the R? value for each data set. 3. The extracted pigment has an absorbance of 0.983. When a 0.2 mL-aliquot of the extract was diluted to 1.0 mL, the absorbance of the diluted solution was found to be…
A standard containing 20 mg/mL of compound P is placed in a 1 cm cuvette. The absorbance of the standard is 1.20 at 600 nm. A sample containing Compound P has an absorbance of 0.50. What is the concentration of this sample?
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Examine the given Beer's law standard curve for an unknown dye measured in a 1.0 cm cuvette. Absorbance of Unknown Dye at 542 nm 0.5 0.45 0.4 0.35 0.3 0.25 0.2 y = 15200x - 0.018. 0.15 0.1 5.00E-06 1.00E-05 1.50E-05 2.00E-05 2,50E-05 3.00E-05 3.50E-05 Concentration (M) What is the molar absorptivity (in M-1cm-1) of the unknown dye at 542 nm? Type answer: 0.25 Incorrect Absorbance at 542 nm
can you explain what is happening in the graph attached? Figure 1: p-nitrophenol Absorbance Standard Curve
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Make a standard calibration curve wherein the x-axis is the total concentration of standard 1 to 6 and the y axis is their corresponding corrected absorbance ..(Note never include the absorbance reading of the unknown sample when making a standard curve) Absorbance Reading Test Tube / Standard Glucose Concentration (mg/mL) Initial Absorbance Corrected Absorbance Blank 0.00 0.045 0.000 Standard 1 1.00 0.102 0.057 Standard 2 2.00 0.236 0.191 Standard 3 4.00 0.697 0.652 Standard 4 6.00 1.104 1.059 Standard 5 8.00 1.385 1.340 Standard 6 10.0 1.915 1.870 Unknown 2.42 0.361 0.316 Data Set for Quantitative Analysis Tube No. ABSORBANCE TRIAL 1 TRIAL 2 TRIAL 3 TRIAL 4 TRIAL 5 TRIAL 6 1 0.041 0.044 0.046 0.046 0.046 0.046 2 0.102 0.103 0.103 0.102 0.102 0.102 3 0.236 0.235 0.240 0.235 0.237 0.235 4 0.703 0.698 0.696…
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