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3. The following questions pertain to the two gas chromatograms of the same straight chain hydrocarbon mixture (shown below). Answer each question completely and concisely. 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Retention time (min) (a) Gol G₁G₂ J Gs C₁ C₁ Cis Cys A B

3. The following questions pertain to the two gas chromatograms of the same straight chain hydrocarbon mixture (shown below). Answer each question completely and concisely. 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Retention time (min) (a) Gol G₁G₂ J Gs C₁ C₁ Cis Cys A B

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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
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3. The following questions pertain to the two gas chromatograms of the same straight chain hydrocarbon mixture (shown below). Answer each question completely and concisely. A C 05 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Retention time (min) le) Cs C C Cis Cs 12 16 20 24 28 36 Retention time (min) a) The chromatogram A shows broadening of the peaks at higher retention times. Explain why this is observed. b) The two chromatograms were collected with the same instrument, including column and detector. Suggest something that was different in B (compared to A) that allowed more of the lower and higher mass hydrocarbons to be separated. c) Consider chromatogram B. If the concentrations of each hydrocarbon in the mixture are all the same, why do the peak areas of cach hydrocarbon differ markedly?
Transcribed Image Text:3. The following questions pertain to the two gas chromatograms of the same straight chain hydrocarbon mixture (shown below). Answer each question completely and concisely. A C 05 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Retention time (min) le) Cs C C Cis Cs 12 16 20 24 28 36 Retention time (min) a) The chromatogram A shows broadening of the peaks at higher retention times. Explain why this is observed. b) The two chromatograms were collected with the same instrument, including column and detector. Suggest something that was different in B (compared to A) that allowed more of the lower and higher mass hydrocarbons to be separated. c) Consider chromatogram B. If the concentrations of each hydrocarbon in the mixture are all the same, why do the peak areas of cach hydrocarbon differ markedly?
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