A mixture of iodocyclohexane and fluorocyclopentane is injected into gas chromatograph equipped with nonpolarbcolumn. Which compound has the longer retention time?
Polar compounds have shorter retention times on non polarcolumns.
Non-polar compounds have longer retention times on non polarcolumns.
Fluorocyclopentane is more polar than Iodocyclohexane .
Hence,
Iodocyclohexane has the longer retention time.
A mixture of iodocyclohexane and fluorocyclopentane is injected into gas chromatograph equipped with nonpolarbcolumn. Which compound...
In this experiment we injected the sample to be analyzed by Gas Chromatograph equipped with an FID (Flame Ionization Detector). Which compound had a shorter retention time? Explain on a molecular level the order in which the two liquids analyzed eluted the GC. (cyclohexane and toluene)
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9. Refer to the gas chromatograph (below) of a mixture of Compound A (RT 1.11) and Compound B (RT-2.27), which was done on a general purpose column: START 51 1.10 227 RT AREA X000X TYPE ABHT AREAS 0.009 0.61 1.11 2.27 XX XX0X XX 55874 44.117 XXXX XX XX TOTAL AREAXX MUL FAC TOR-X Which compound has the highest retention time? b. Which compound is present in a larger amount assuming that their mass correction factors are...
In this experiment we injected the sample to be analyzed by Gas Chromatograph equipped with an FID (Flame Ionization Detector). The detector ionizes the sample as it reaches it, and the peak is proportional to the number of ions with a live flame. A chemist performed a distillation of methanol and water and wanted to analyze the results using the same GC instrument with FID. Could he use a similar procedure to analyze the results of his experiment? Explain why...
A number of factors determine the rate at which a given compound travels through a gas chromatograph. List two of these factors: The period following injection that is required for a compound to pass through the column is called the What would happen to the retention time of a compound if the following changes were made? Decrease the flow rate of the carrier gas Increase the temperature of the column Increase the length of the column How do the temperature...
9 VII. Gas Chromatography 1. The organic mixture to be separated on the GC is injected into the GC as a (gas, liquid, or solid). 2. The typical volume of mixture injected into a GC is 1-10 (microliters, milliliters, or deciliters). 3. Immediately upon entering the injection port the mixture is_ _(solidified, condensed, or vaporized). (heated, cooled, maintained at room 4. The event described in #3 occurs because the injection port is temperature). 5. An inert gas, referred to as...
os 04 16. On a gas chromatograph the amount of each detected component is proportional to the relative peak area. How do you calculate this peak area? How do you determine the retention time? 03 M 02 0,1 10
Qs1. Answer the following questions based on the gas chromatogram of a mixture of three components shown below. 1. What compound has the highest boiling point? 2. Arrange the compounds in increasing order of their polarity 3. What is the minor component in the mixture? Abundance 10 Retention Time (minutes)
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Question 5 1 pts If the peak of compound 2 has an area of 100 mm2 (retention time 5 minutes) and compound 1 has a peak area equal to 200 mm2 (retention time 10 minutes), which of the following statements is correct? O Compound 2 has a higher boiling point than compound 1. There is a lower percentage of compound 1 than 2 in the mixture. There is a lower percentage...
In gas chromatography, why, even though you injected a mixture containing the same volume of each component, the three eluted peaks, in the chromatogram, do not have the same intensity? Mention at least two good reasons for this behavior
1. A mixture of four alkenes (1-decene, 1-heptene, 1-nonene, and 1-octene) was analyzed by gas chromatography. Below, on the line, list the four alkenes in order of increasing retention time: 2. At 760.0 mm atmospheric pressure, a binary liquid mixture of components A and B gives the temperature composition diagram shown below. The liquid curve plots boiling point vs. composition of the liquid mixture. The vapor curve plots temperature vs. equilibrium vapor composition. A horizontal line on the diagram, such...