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Chapter 0: Q4P (page 9)

What is the purpose of a calibration curve?

Short Answer

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A calibration curve is a graph of detector response vs analyte concentration.

Step by step solution

01

Definition of the calibration curve

A calibration curve, also called a standard curve, is a method for measuring the concentration of a drug in an unknown sample by comparing it to a series of known concentration standard samples.

02

Purpose of the calibration curve

  • On two distinct devices, the same material with the same concentration might sometimes produce different detection responses.
  • They employ calibration curves or standard curves to optimize their work and efficiency.
  • A calibration curve is a graph of detector response vs analyte concentration. That means we should examine a standard solution before using our sample (whose concentration is known).
  • The calibration curve is a graph that we may obtain from its analysis, and its aim is to provide us with a graph and detector response values that can be used as a reference value.
  • One can calibrate our method of analysis in order to obtain precise results by doing so.

Thus, A calibration curve is a graph of detector response vs analyte concentration.

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List the steps in a chemical analysis.

An unknown sample of Cu2+gave an absorbance of 0.262 in an atomic absorption analysis. Then 1.00 mL of solution containing 100.0 ppm (=g/mL)Cu2+was mixed with 95.0mL of unknown, and the mixture was diluted to 100.0mL in a volumetric flask. The absorbance of the new solution was 0.500.

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