Questions 1 and 2 Options Page HelpCollect99 1/A = 14.860The Rate and Order of a Chemical Reaction1/A2.0-3.586A3.6963.8423.9344.0824.2014.285Linear Fit for: 0.017M Bleach | Absorbance at 630.1 nmAbs-630.1 nm = mt+bm (Slope): -0.0004530b (Y-Intercept): 0.5257Correlation: -0.9608RMSE: 0.02339Linear Fit for: 0.068M Bleach | Absorbance at 630.1 nmAbs-630.1 nm = mt+b7m (Slope): -0.0001799b (Y-Intercept): 0.2334Correlation: -0.9152RMSE: 0.01418< 1.5-Linear Fit for: 0.017M Bleach | InAInA = mt+bLinear Fit for: 0.034M Bleach | InAInA = mt+bm (Slope): 4.091E-06b (Y-Intercept): -0.1709m (Slope): -0.001133b (Y-Intercept): -0.6235Correlation: -0.9832RMSE: 0.037654.406Linear Fit for: 0.034M Bleach | Absorbance at 630.1 nmAbs-630.1 nm = mt+bm (Slope): 3.450E-06b (Y-Intercept): 0.8429Correlation: 0.3767RMSE: 0.0015194.4984.5894.6874.7884.8604.9425.0305.1005.1765.2525.3265.395 7Correlation: 0.3767RMSE: 0.0018011.0-Linear Fit for: 0.017M Bleach | 1/A1/A = mt+bm (Slope): 0.002908b (Y-Intercept): 1.800Correlation: 0.9961RMSE: 0.04624Linear Fit for: 0.068M Bleach | InAInA = mt+bm (Slope): -0.0009544b (Y-Intercept): -1.448Correlation: -0.9455RMSE: 0.058820.5-Linear Fit for: 0.034M Bleach | 1/A1/A = mt+bLinear Fit for: 0.068M Bleach | 1/A1/A = mt+bm (Slope): 0.005177b (Y-Intercept): 4.198Correlation: 0.9686RMSE: 0.2378m (Slope): -4.851E-06b (Y-Intercept): 1.186Correlation: -0.3767RMSE: 0.0021361 nmActivate Windows400Go to Settings to activate Windows.0.0-200600(232.8, 0.738)Time (s)4:31 PI3/17/20Absorbance at 630.1 nm InA 1/A Page> of 21. Determine the molar concentration of the dye in the stock dye solution that you used, as follows: (show work forcredit)a. Read the absorbance value, A0, at the peak of the absorption curve in the spectrum.Ao =b. Use Beer's Law to solve for [Dye]: A0 = abc, where pathlength (b) = 1 cm and absorptivity (a) = 0.164 L/mg-cm at 630 nm,and c = concentration. (be sure to include the correct units)c. Convert concentration to moles/L. (Calculate molar mass from structure)2. Based on the three trials you performed, what is the order of the reaction with respect to the dye? Explain.3. Complete the data table below, presenting initial concentrations of reagent in the reaction solution after mixing.Determine the pseudo rate constants, k'1, k'2, and k'3, for Runs 1-3 using the slopes of the regression lines for theMacBook Air80888DIIDDF3F4F5F6F7F8F9F10#32$%&4789ERYU< CO

Answered: Questions 1

Science

Chemistry

Questions 1

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter1: Introduction

Section: Chapter Questions

Problem 1.11QAP

See similar textbooks

Similar questions

You have carried out an experiment using the spectrophotometry concept. A solutioncontaining compound X is mixed with reagent 1 and then reagent 2. This mixture produces ablue colour whose absorbance (A) could be read at 550 nm. The results are shown below If the standard solution (compound X) used have a concentration of 1 mM: 5. What is the reason for using test tube no. 1 in the table above? Can it be replaced withdistilled water?
The following volumes of a solution containing 1.10 ppm Zn2+ were pipetted into separatory funnels each containing 5.00 mL of an unknown zinc solution: 0.00, 1.00, 4.00, 8.00 and 12.00. Each was extracted with three 5 mL aliquots of CCl4 containing an excess of 8-hydroxyquinoline. The extracts were then diluted to 25.0 mL and their fluorescence measured with a fluorometer. The results for the standard addition calibration were as follows: Volume Std. Zn2+ / mL [Zn2+] / ppm Fluorometer Reading 0.00 6.12 1.00 7.41 4.00 11.16 8.00 15.68 12 20.64 a) Determine the concentration on Zn2+ ions in each of the standard solutions coming from the coming from the 1.10 ppm Zn2+ solutions, Please show your working
The concentration of phenol in an aqueous solution is 10 ug/mL. The absorbance is found to be 0.209 when this solution is placed in a 1.00 cm cuvette and 258 nm radiation is passed through Calculate the specific absorptivity, including units, of phenol? What will be the absorbance if the solution is diluted to 5 ug/mL? What will be the absorbance if the path length of the original solution is increased to 5.00 cm?
You have carried out an experiment using the spectrophotometry concept. A solutioncontaining compound X is mixed with reagent 1 and then reagent 2. This mixture produces ablue colour whose absorbance (A) could be read at 550 nm. The results are shown below If the standard solution (compound X) used have a concentration of 1 mM: 3. If the absorbance was read using 1 cm diameter cuvettes, calculate the molar extinctioncoefficient for compound X in the solution. State the unit for the coefficient. Assumeeach molecule of X produces one molecule of coloured compound
The following calibration data were obtained by an atomic absorption spectrophotometric (AAS) method for the determination of mercury in an herbal product. (show complete solution) 1. What is the detection limit for the method? 2. What is the limit of quantitation for the method?
Repeat analyses of the Zn content of an ore leachate by atomic absorption spectrophotometry yielded the following data for successive samples: 2.11, 2.09, 2.29, 2.13, 2.14 ppm Zn. Using 95% confidence criteria which of the following statements is true? Select one: a. no data should be rejected b. 2.09 should be rejected c. 2.09 and 2.29 should be rejected d. 2.29 should be rejected.
An ethanol solution of 3.5 mg/100 ml of compound Y (150.0 g/mol) in a 1.00 cm quartz cell has an absorbance (A) of 0.972 at λmax=235 nm. What is its molar extinction coefficient? Report your answer to the correct number of significant figures. Do not include units in your answer. I need to know what is the correct number of sig figs for this question which will determine what the correct answer is.
What is the purpose of reference beam in the double-beam spectrophotometer shown in Figure 20-1? Select all the correct answers. a)To correct for changes in source light intensity as a function of time b)to correct for changes in intensity of the light source as a function of wavelength c)to correct of scattering of light off the surface of the sample cuvette d)to correct for absorbance of the solvent e)to correct for changes in detector signal as a function of wavelength
A stock solution of analyte is made by dissolving 34.83 mg of copper (II) acetate hexahydrate(fw = 289.73 g/mol) in 25.00 mL of water. A second stock solution of internal standard is madeby dissolving 28.43 mg of germanium (I) acetate (fw = 190.74 g/mol) into 25.00 mL of water.These solutions are used to make a series of standards for ﬂame atomic absorption analysiscalibration. The standard solutions (each 10.00 mL total volume) should have the followingconcentrations of copper: 10.00; 25.00; 50.00; 100.0; and 200.0 μM. Each calibration solutionshould also contain 50.00 μM of germanium. What is the analyte stock solution concentration? What is the internal standard stocksolution concentration?Complete this table.
An absorbing solution transmits just 38 of every 140 photons to the detector. If the cell width was 2.0 cm and the analyte concentration was 26 mg/L, what was the analyte absorptivity (ppm-1 cm-1)?
1. In using the spectrophotometer PD 303, why is there a need to use water as blank when measuring the absorbance of each solution
The following calibration data were obtained by an atomic absorption spectrophotometric (AAS) method for the determination of mercury in an herbal product. 1. Calculate the calibration sensitivity.2. Calculate the coefficient of variation for the mean at 6.00 ppm 3. What is the detection limit for the method? 4. What is the limit of quantitation for the method?