The concentration and absorbance data below were collected for compoundX. A sample of compound X of unknown concentration has a correctedaverage absorbance of 0.5621 (three replicate measurements). Calculate thecalibration sensitivity?ConcentrationAbsorbance(mg/mL)0.422100.510150.6210.23350.0199O 0.00567O 0.045 Which of the following statements is true of the detection limit of aninstrument?O The detection limit of an instrument is the same as its sensitivity.O The detection limit of an instrument is a measure of ability to determine whetherslight differences in experimental results are significant.O The detection limit of an instrument is the smallest amount of analyte that theinstrument is able to measure.O The detection limit of an instrument is the ability of the instrument to respond toan error.PreviousNext

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ing statements is true of the detection limit of an instrument?

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter3: Matter

Section: Chapter Questions

Problem 6CR

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Concept explainers

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.

Question

The concentration and absorbance data below were collected for compound
X. A sample of compound X of unknown concentration has a corrected
average absorbance of 0.5621 (three replicate measurements). Calculate the
calibration sensitivity?
Concentration
Absorbance
(mg/mL)
0.422
10
0.510
15
0.621
0.2335
0.0199
O 0.00567
O 0.045

Which of the following statements is true of the detection limit of an
instrument?
O The detection limit of an instrument is the same as its sensitivity.
O The detection limit of an instrument is a measure of ability to determine whether
slight differences in experimental results are significant.
O The detection limit of an instrument is the smallest amount of analyte that the
instrument is able to measure.
O The detection limit of an instrument is the ability of the instrument to respond to
an error.
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