A compound X is to be determined by UV/Visible spectrophotometry. A calibration curve is constructed from standard solutions of X with the following results: 0.50 ppm, A =0.24; 1.5 ppm, A =0.36; 2.5 ppm, A = 0.44; 3.5 ppm, A = 0.59; 4.5 ppm, A =0.70. Find the slope and intercept of the calibration curve, the standard error in y, the concentration of the solution of unknown X concentration and the standard deviation in the concentration of X. Construct a plot of the calibration curve and determine the unknown concentration by hand from the plot (only for the calibration curve, slope and y-intercept. Make an equation on how to solve for the concentration of unknown).
A compound X is to be determined by UV/Visible spectrophotometry. A calibration curve is constructed from standard solutions of X with the following results: 0.50 ppm, A =0.24; 1.5 ppm, A =0.36; 2.5 ppm, A = 0.44; 3.5 ppm, A = 0.59; 4.5 ppm, A =0.70. Find the slope and intercept of the calibration curve, the standard error in y, the concentration of the solution of unknown X concentration and the standard deviation in the concentration of X. Construct a plot of the calibration curve and determine the unknown concentration by hand from the plot (only for the calibration curve, slope and y-intercept. Make an equation on how to solve for the concentration of unknown).
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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A compound X is to be determined by UV/Visible spectrophotometry. A calibration curve is constructed from standard solutions of X with the following results: 0.50 ppm, A =0.24; 1.5 ppm, A =0.36; 2.5 ppm, A = 0.44; 3.5 ppm, A = 0.59; 4.5 ppm, A =0.70. Find the slope and intercept of the calibration curve, the standard error in y, the concentration of the solution of unknown X concentration and the standard deviation in the concentration of X. Construct a plot of the calibration curve and determine the unknown concentration by hand from the plot (only for the calibration curve, slope and y-intercept. Make an equation on how to solve for the concentration of unknown).
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