A solution was prepared by mixing 5.00mL of unknown quantities of arsenic with 2.00mL of solution containing 4.13ug of standard antimony per milliliter and diluting to 10mL. The measured signal of the arsenic was 0.8001 and of the antimony was 0.9902 in the samples measured by atomic absorption spectroscopy. In a separate experiment, it was found that for equal concentrations of arsenic and antimony (2.75ug/mL respectively), arsenic gave a signal of 0.795 and antimony gave a signal of 0.607. What is the concentration of arsenic in the unknown?

A solution was prepared by mixing 5.00mL of unknown quantities of arsenic with 2.00mL of solution containing 4.13ug of standard antimony per milliliter and diluting to 10mL. The measured signal of the arsenic was 0.8001 and of the antimony was 0.9902 in the samples measured by atomic absorption spectroscopy. In a separate experiment, it was found that for equal concentrations of arsenic and antimony (2.75ug/mL respectively), arsenic gave a signal of 0.795 and antimony gave a signal of 0.607. What is the concentration of arsenic in the unknown?

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

Chapter14: Applications Of Ultraviolet-visible Molecular Absorption Spectrometry

Section: Chapter Questions

Problem 14.9QAP

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