7. What is the effect of the following on retention time seen in the GC? a. Increase in flow rate of carrier gas Increase in the temperature of the column b. c. Increasing the polarity of the column
What would be the effect of raising the temperature or increasing the carrier gas flow rate one the ability to resolve two closely spaced peaks?(experiment : The dilute sulfuric acid-catalyzed dehydration on 2-methyl-2-butanol(t-amylalcohol) proceeds readily to give a mixture of alkenes that can be analyzed by gas chromatography)
4. The compounds in a mixture separated by GC can be identified by their retention times. If you Suructor nad not told you which peak in the GC chromatogram corresponded to which alker you didn't know the boiling points of the alkenes, how could you determine the identity or each peak by its retention time? Identities of the components in a mixture separated by GC can also be determined by the technique called "spiking". Suppose you had run a chromatogram...
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...
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 and flow rate of the carrier gas affect the separation of two compounds that have been shown to separate by GC? 5. Rank the following compounds in terms of expected retention times on a non-polar GC Column TOH OCH.CH MW-114...
In gas chromatography (GC), why do we use a FAME standard instead of an alkane standard and how can we still use this to calculate a retention index?
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...
Which one would elute first on GC (gas Chromatography, hexane or toluene? why?
Draw a schematic diagram that illustates how the following compents are conntected together ina gas chromatograph and indicate the direction of flow of the carrier gas: He tank,attenuator, column, injection port, dectetor, computer
Santa's modern sleigh is powered by "magical dark matter", measured in kg. As it is used up, its mass vanishes. If Santa's 3000 kg (total mass) sleigh is moving at 20 m/s and uses up 300 kg, its new speed is: a. 21.7 m/s b. 22.2 m/s c. 26.7 m/s d. 200 m/s e. none of these Please show me how to do the work.