In a preliminary experiment, a solution containing 0.0837 mg benzene and 0.0666 mg toluene was analyzed by gas chromatography and gave peak areas of 495 for benzene and 367 for toluene. After this, the amount of unknown was determined by adding 0.0561 mg of benzene to a solution containing an unknown amount of toluene. The peak areas determined for benzene and toluene in this analysis were 643 and 515 respectably. How many mg of toluene are present in the sample?

In a preliminary experiment, a solution containing 0.0837 mg benzene and 0.0666 mg toluene was analyzed by gas chromatography and gave peak areas of 495 for benzene and 367 for toluene. After this, the amount of unknown was determined by adding 0.0561 mg of benzene to a solution containing an unknown amount of toluene. The peak areas determined for benzene and toluene in this analysis were 643 and 515 respectably. How many mg of toluene are present in the sample?

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter88: Column Chromatography

Section: Chapter Questions

Problem 5P

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Next, 2.00 mL of 9.63 mM S was added to 10.00 mL of a solution of unknown concentration of X, and the mixture was diluted to 25.0mL. Chromatographic analysis of this solution produced peak areas of 4822 for X and 4099 for S. What was the concentration of 5 (in mM) of the 25.0mL solution?
In a chromatographic analysis, a solution containing 0.0837M toluene and 0.0666M xylene resulted in peak areas of Atoluene= 423 and Axylene= 347. To analyze an unknown sample, 10.0mL of 0.146M xylene was added to 10.0mL of an unknown toluene-containing solution, and the mixture was diluted to 25.0mL. This mixture gave a chromatogram with peak areas of Atoluene= 553 and Axylene= 582. What was the concentration of toluene in the unknown solution?
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