**Problem Statement: Polarographic Analysis of Chloroform and DDT**A mixture containing 0.500 mM chloroform and 0.800 mM DDT produced signals of 15.3 μA for chloroform and 10.1 μA for DDT. An unknown solution (10.0 mL) containing DDT was placed in a 100 mL volumetric flask, and 10.2 μL of chloroform (formula mass (FM) = 119.39, density = 1.484 g/mL) were added. After dilution to the mark with solvent, polarographic signals of 29.4 μA and 8.7 μA were observed for chloroform and DDT, respectively. Calculate the concentration of DDT in the unknown solution.

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1. A mixture containing 0.500 mM chloroform and 0.800 mM DDT gave signals of 15.3 UA for chloroform and 10.1 uA for DDT. An unknown solution (10.0 mL) containing DDR was places in a 100 mL volumetric flask and 10.2 ul of chloroform (FM 119.39, density = 1.484 g/mL) were added. After dilution to the mark with solvent, polarographic signals of 29.4 and 8.7 uA were observed for the chloroform and DDT, respectively. Find the concentration of DDT in the unknown.

1. A mixture containing 0.500 mM chloroform and 0.800 mM DDT gave signals of 15.3 UA for chloroform and 10.1 uA for DDT. An unknown solution (10.0 mL) containing DDR was places in a 100 mL volumetric flask and 10.2 ul of chloroform (FM 119.39, density = 1.484 g/mL) were added. After dilution to the mark with solvent, polarographic signals of 29.4 and 8.7 uA were observed for the chloroform and DDT, respectively. Find the concentration of DDT in the unknown.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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**Problem Statement: Polarographic Analysis of Chloroform and DDT**

A mixture containing 0.500 mM chloroform and 0.800 mM DDT produced signals of 15.3 μA for chloroform and 10.1 μA for DDT. An unknown solution (10.0 mL) containing DDT was placed in a 100 mL volumetric flask, and 10.2 μL of chloroform (formula mass (FM) = 119.39, density = 1.484 g/mL) were added. After dilution to the mark with solvent, polarographic signals of 29.4 μA and 8.7 μA were observed for chloroform and DDT, respectively. Calculate the concentration of DDT in the unknown solution.

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Step 1: Internal standard method equation

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Step 2: Calculation of Response factor (F)

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Step 3: Calcualation of concentration of chloroform in the diluted solution

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Step 4: Calculation of concentration of DDT in the diluted solution

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Step 5: Calculation of concentration of DDT in the unknown

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