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Four GC chromatograms are provided. Each chromatogram describes a sample containing some combination of two alkanes (pentane, hexane, heptane, and octane) determine which chromatogram corresponds with which mixture. Alkane mixtures: pentane + heptane, hexane + octane, heptane + octane, hexane + heptane explain how you made your assignments:

Four GC chromatograms are provided. Each chromatogram describes a sample containing some combination of two alkanes (pentane, hexane, heptane, and octane) determine which chromatogram corresponds with which mixture. Alkane mixtures: pentane + heptane, hexane + octane, heptane + octane, hexane + heptane explain how you made your assignments:

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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
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Four GC chromatograms are provided. Each chromatogram describes a sample containing some combination of two alkanes (pentane, hexane, heptane, and octane) determine which chromatogram corresponds with which mixture.

Alkane mixtures:

pentane + heptane, hexane + octane, heptane + octane, hexane + heptane

explain how you made your assignments:

### Chromatogram Analysis #### Graph 1 - **Title:** DTCD1 - **Graph Number:** 3 - **Axes:** - X-axis: Time (min) ranging from 0.00 to 2.50 minutes. - Y-axis: Intensity or signal response, ranging from 0 to 20000 units. - **Details:** - Two significant peaks are present in the graph. - The first peak occurs at approximately 1.170 minutes with a signal intensity of about 20000. - The second peak occurs at approximately 1.701 minutes with a similar intensity. #### Graph 2 - **Title:** DTCD1 - **Graph Number:** 4 - **Axes:** - X-axis: Time (min) ranging from 0.00 to 2.50 minutes. - Y-axis: Intensity or signal response, ranging from 0 to 25000 units. - **Details:** - Three distinct peaks are visible. - The first peak occurs at approximately 0.711 minutes. - The second peak appears at approximately 1.238 minutes with a higher intensity close to 25000 units. ### Interpretation The chromatograms represent the separation of components in a mixture over a specified time. The peaks correspond to different substances eluting from a chromatography column, indicating their retention time and relative abundance based on peak height. The higher the peak, the greater the concentration of that component. These graphs could be part of an analytical method, such as High Performance Liquid Chromatography (HPLC), used in chemical analysis to identify, quantify, and purify the components of a mixture.
Transcribed Image Text:### Chromatogram Analysis #### Graph 1 - **Title:** DTCD1 - **Graph Number:** 3 - **Axes:** - X-axis: Time (min) ranging from 0.00 to 2.50 minutes. - Y-axis: Intensity or signal response, ranging from 0 to 20000 units. - **Details:** - Two significant peaks are present in the graph. - The first peak occurs at approximately 1.170 minutes with a signal intensity of about 20000. - The second peak occurs at approximately 1.701 minutes with a similar intensity. #### Graph 2 - **Title:** DTCD1 - **Graph Number:** 4 - **Axes:** - X-axis: Time (min) ranging from 0.00 to 2.50 minutes. - Y-axis: Intensity or signal response, ranging from 0 to 25000 units. - **Details:** - Three distinct peaks are visible. - The first peak occurs at approximately 0.711 minutes. - The second peak appears at approximately 1.238 minutes with a higher intensity close to 25000 units. ### Interpretation The chromatograms represent the separation of components in a mixture over a specified time. The peaks correspond to different substances eluting from a chromatography column, indicating their retention time and relative abundance based on peak height. The higher the peak, the greater the concentration of that component. These graphs could be part of an analytical method, such as High Performance Liquid Chromatography (HPLC), used in chemical analysis to identify, quantify, and purify the components of a mixture.
### Analysis of Chromatographic Data The image presents two chromatograms labeled as 1 and 2. Each graph is a record of an analysis conducted using chromatography, represented as peaks plotted against time. #### Chromatogram 1 - **Axes**: - The x-axis represents time in minutes (min), ranging from 0.25 to 2.25. - The y-axis represents the intensity of response, with values up to 30000. - **Peaks**: 1. The first peak appears at approximately 0.803 min with a high intensity around 30000. 2. The second peak occurs at around 1.360 min with an intensity lower than the first peak. #### Chromatogram 2 - **Axes**: - The x-axis again represents time in minutes (min), ranging from 0.25 to 2.25. - The y-axis indicates the same intensity of response, also reaching up to 30000. - **Peaks**: 1. The prominent peak is again at approximately 0.803 min with an intensity nearing 31000. 2. An additional peak is observed at around 1.860 min with a much lower intensity. ### Interpretation - **Comparison of Chromatograms**: - Both chromatograms exhibit a strong initial peak at around 0.803 min, indicating a common component present in both samples. - The second peaks differ in retention time and intensity, suggesting a variation in composition or concentration of secondary components between the two samples analyzed. These chromatograms are typically used in analytical chemistry for quantifying and identifying substances within a mixture, based on the retention time and peak intensity.
Transcribed Image Text:### Analysis of Chromatographic Data The image presents two chromatograms labeled as 1 and 2. Each graph is a record of an analysis conducted using chromatography, represented as peaks plotted against time. #### Chromatogram 1 - **Axes**: - The x-axis represents time in minutes (min), ranging from 0.25 to 2.25. - The y-axis represents the intensity of response, with values up to 30000. - **Peaks**: 1. The first peak appears at approximately 0.803 min with a high intensity around 30000. 2. The second peak occurs at around 1.360 min with an intensity lower than the first peak. #### Chromatogram 2 - **Axes**: - The x-axis again represents time in minutes (min), ranging from 0.25 to 2.25. - The y-axis indicates the same intensity of response, also reaching up to 30000. - **Peaks**: 1. The prominent peak is again at approximately 0.803 min with an intensity nearing 31000. 2. An additional peak is observed at around 1.860 min with a much lower intensity. ### Interpretation - **Comparison of Chromatograms**: - Both chromatograms exhibit a strong initial peak at around 0.803 min, indicating a common component present in both samples. - The second peaks differ in retention time and intensity, suggesting a variation in composition or concentration of secondary components between the two samples analyzed. These chromatograms are typically used in analytical chemistry for quantifying and identifying substances within a mixture, based on the retention time and peak intensity.
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