Chloroform is an internal standard in the determination of the pesticide DDTin a polarographic analysis in which each compound is reduced at an electrodesurface. A mixture containing 0.500 mM chloroform and 0.800 mM DDT gavesignals of 15.3 µA for chloroform and 10.1 µA for DDT. An unknown solution (10.00mL) containing DDT was placed in a 100-ml volumetric flask and 10.2 ul ofchloroform (MW = 119.39, density = 1.484 g/mL) were added. After dilution to themark with solvent, polarographic signals of 29.4 and 8.7 µA were observed for thechloroform and DDT, respectively. Find the concentration of DDT in the unknown.

Solution - According to the question - Given - The equation for response factor is = ADDT/(DDT)/Ac…

na polarographic analysis in which each compound is reduced at an electrode urface. A mixture containing 0.500 mM chloroform and 0.800 mM DDT gave ignals of 15.3 µA for chloroform and 10.1 µA for DDT. An unknown solution (10.00 nL) containing DDT was placed in a 100-ml volumetric flask and 10.2 uL of hloroform (MW = 119.39, density = 1.484 g/mL) were added. After dilution to the nark with solvent, polarographic signals of 29.4 and 8.7 HA were observed for the hloroform and DDT, respectively. Find the concentration of DDT in the unknown.

na polarographic analysis in which each compound is reduced at an electrode urface. A mixture containing 0.500 mM chloroform and 0.800 mM DDT gave ignals of 15.3 µA for chloroform and 10.1 µA for DDT. An unknown solution (10.00 nL) containing DDT was placed in a 100-ml volumetric flask and 10.2 uL of hloroform (MW = 119.39, density = 1.484 g/mL) were added. After dilution to the nark with solvent, polarographic signals of 29.4 and 8.7 HA were observed for the hloroform and DDT, respectively. Find the concentration of DDT in the unknown.

Appl Of Ms Excel In Analytical Chemistry

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ISBN:9781285686691

Author:Crouch

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Chapter10: Potentiometry And Redox Titrations

Section: Chapter Questions

Problem 2P

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