nL of the unknown were pipetted into each of five 50.0-ml volumetric flasks. Various volumes of a tandard containing 12.2 ppm Cu were added to the flasks, and the solutions were then diluted to olume. Unknown (mL) L0.0 Standard (mL) Absorbance 0.0 0.201 L0.0 10.0 0.292 0.0 20.0 0.378 0.0 30.0 0.467 L0.0 40.0 0.554 A. Plot absorbance as a function of the concentration of Cu standard after final dilution and determine the equation of the line and determine the x-intercept. Calculate the copper concentration in ppm Cu in the aqueous sample.
nL of the unknown were pipetted into each of five 50.0-ml volumetric flasks. Various volumes of a tandard containing 12.2 ppm Cu were added to the flasks, and the solutions were then diluted to olume. Unknown (mL) L0.0 Standard (mL) Absorbance 0.0 0.201 L0.0 10.0 0.292 0.0 20.0 0.378 0.0 30.0 0.467 L0.0 40.0 0.554 A. Plot absorbance as a function of the concentration of Cu standard after final dilution and determine the equation of the line and determine the x-intercept. Calculate the copper concentration in ppm Cu in the aqueous sample.
Chapter28: Atomic Spectroscopy
Section: Chapter Questions
Problem 28.15QAP
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