The following VU-VIs experiment was carried in a 1.0 cm cuvette. 1) In flask 1, 40.00 mL of the unknown solution was placed in the 100.0 mL flask and diluted to the mark with deionized water and the absorbance was measured to be 0.200. 2 In flask 2, 40.00 mL of the unknown solution and 10.00 mL of 100.0 ppm pure analyte were placed in the 100.0 mL flask and diluted to the mark with deionized water and the absorbance was measured to be 0.350. Given the above data, use use a 2 point standard addition to calculate the concentration of the original unknown in ppm.

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Chapter1: Chemical Foundations
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The following VU-VIs experiment was carried in a 1.0 cm cuvette.
1) In flask 1, 40.00 mL of the unknown solution was placed in the 100.0 mL flask and diluted to the mark with
deionized water and the absorbance was measured to be 0.200.
2 In flask 2, 40.00 mL of the unknown solution and 10.00 mL of 100.0 ppm pure analyte were placed in the
100.0 mL flask and diluted to the mark with deionized water and the absorbance was measured to be 0.350.
Given the above data, use use a 2 point standard addition to calculate the concentration of the original
unknown in ppm.
Pick the best answer.
133.3 ppm
O 59.7 ppm
O 33.33 ppm
O 79.7 ppm
O 66.67 ppm
Transcribed Image Text:The following VU-VIs experiment was carried in a 1.0 cm cuvette. 1) In flask 1, 40.00 mL of the unknown solution was placed in the 100.0 mL flask and diluted to the mark with deionized water and the absorbance was measured to be 0.200. 2 In flask 2, 40.00 mL of the unknown solution and 10.00 mL of 100.0 ppm pure analyte were placed in the 100.0 mL flask and diluted to the mark with deionized water and the absorbance was measured to be 0.350. Given the above data, use use a 2 point standard addition to calculate the concentration of the original unknown in ppm. Pick the best answer. 133.3 ppm O 59.7 ppm O 33.33 ppm O 79.7 ppm O 66.67 ppm
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