Plot absorbance as a function of the concentration of Cr (IV) standard. Determine the equation of the line and the X intercept. The unknown and all standard additions were made up to the same final volume (final volume is not given in the problem). (a) Find the concentration of Cr (IV) in the river water. Solutions River water River water + 100 ppb Cr (IV) River water + 200 ppb Cr (IV) River water + 300 ppb Cr (IV) River water + 400 ppb Cr (IV) River water + 500 ppb Cr (IV) Current (μA) 0.95 1.21 1.34 1.57 1.75 2.05

Plot absorbance as a function of the concentration of Cr (IV) standard. Determine the equation of the line and the X intercept. The unknown and all standard additions were made up to the same final volume (final volume is not given in the problem). (a) Find the concentration of Cr (IV) in the river water. Solutions River water River water + 100 ppb Cr (IV) River water + 200 ppb Cr (IV) River water + 300 ppb Cr (IV) River water + 400 ppb Cr (IV) River water + 500 ppb Cr (IV) Current (μA) 0.95 1.21 1.34 1.57 1.75 2.05

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter31: Introduction To Analytical Separations

Section: Chapter Questions

Problem 31.1QAP

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