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What would happen to the retention time of a compound if the following changes were made?...
A number of factors determine the rate at which a given compound travels through a gas chromatograph. List two of t...
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...
11. What would happen to the retention time of a compound if the following changes were...
11. What would happen to the retention time of a compound if the following changes were made? Decrease the flow rate of the carrier gas. а. Increase the temperature of the column Increase the length of the column b. с.
11. What would happen to the retention time of a compound if the following changes were made? Decrease the flow rate of the carrier gas. а. Increase the temperature of the column Increase the length of the column b. с.
7. What is the effect of the following on retention time seen in the GC? a....
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
8. The recording paper is moving at the rate of 2.0 in./min. What are the retention...
8. The recording paper is moving at the rate of 2.0 in./min. What are the retention times of the peaks that appear at: a) 12.0 in b) 2.5 cm 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 8. The recording paper is moving at the rate of 2.0 in./min. What...
In fractional distillation with gas chromatography, what would happen to retention time if we (a. increase...
In fractional distillation with gas chromatography, what would happen to retention time if we (a. increase flow rate?) or (b. decrease molecular weights of components?)
Which of the following are attributes that affect the retention time of a given compound for...
Which of the following are attributes that affect the retention time of a given compound for Gas Chromatography: (select all that apply) Aroma Polarity Volatility Column Temperature
4. The compounds in a mixture separated by GC can be identified by their retention times....
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...
based on your results what is the correlation between retention time and molar mass? • The...
based on your results what is the correlation between
retention time and molar mass?
• The lower the Urganic solvents. Put the 5 chemicals Doing Note that you do NOT need to pick compounds that adhere to a particular trend. These are the Pick 5 compounds from the through the simulator resha the nete open-ended to allow you to play with the program. Acetonitrile Chloroform Dichloromethane Diethyl ether Ethanol Isopropanol Heptane Hexane Methanol Pentane Toluene a) List your results here...
Table 2: Alcohol and Ketone Standards GC Retention Times GC#: Retention time Alcohol Standard Mixture Phent...
Table 2: Alcohol and Ketone Standards GC Retention Times GC#: Retention time Alcohol Standard Mixture Phent ion= 2.05Smin low Peak 1 Compound Name: athanol Rapesnal utanal aclapeatanal 4.755min oilng 6.895min .230 min Peak 2 Compound Name: Peak 3 Compound Name: Peak 4 Compound Name: GC#:1 Ketone Standard Mixture Retention time 2.575un Peak 1 Compound Name: Acclono Butanon a Pentanone 2tHex anon Peak 2 Compound Name: min Peak 3 Compound Name: 615 min 1D. 307 min Peak 4 Compound Name: Part...
2. If two different compounds have the same Rr value, how might they be identified using paper chromatography?...
2. If two different compounds have the same Rr value, how might they be identified using paper chromatography? 3. Why is it important to keep the spots on the paper as small as possible? 4. If the solvent pool at the bottom of the beaker touched the spots on the 1.5cm line, what would happen to the spots? How would you address this error? 5. If you were teaching a student how to do paper chromatography, what three pieces of...
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...
11. What would happen to the retention time of a compound if the following changes were made? Decrease the flow rate of the carrier gas. а. Increase the temperature of the column Increase the length of the column b. с.
11. What would happen to the retention time of a compound if the following changes were made? Decrease the flow rate of the carrier gas. а. Increase the temperature of the column Increase the length of the column b. с.
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
8. The recording paper is moving at the rate of 2.0 in./min. What are the retention times of the peaks that appear at: a) 12.0 in b) 2.5 cm 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 8. The recording paper is moving at the rate of 2.0 in./min. What...
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...
based on your results what is the correlation between
retention time and molar mass?
• The lower the Urganic solvents. Put the 5 chemicals Doing Note that you do NOT need to pick compounds that adhere to a particular trend. These are the Pick 5 compounds from the through the simulator resha the nete open-ended to allow you to play with the program. Acetonitrile Chloroform Dichloromethane Diethyl ether Ethanol Isopropanol Heptane Hexane Methanol Pentane Toluene a) List your results here...
Table 2: Alcohol and Ketone Standards GC Retention Times GC#: Retention time Alcohol Standard Mixture Phent ion= 2.05Smin low Peak 1 Compound Name: athanol Rapesnal utanal aclapeatanal 4.755min oilng 6.895min .230 min Peak 2 Compound Name: Peak 3 Compound Name: Peak 4 Compound Name: GC#:1 Ketone Standard Mixture Retention time 2.575un Peak 1 Compound Name: Acclono Butanon a Pentanone 2tHex anon Peak 2 Compound Name: min Peak 3 Compound Name: 615 min 1D. 307 min Peak 4 Compound Name: Part...
2. If two different compounds have the same Rr value, how might they be identified using paper chromatography? 3. Why is it important to keep the spots on the paper as small as possible? 4. If the solvent pool at the bottom of the beaker touched the spots on the 1.5cm line, what would happen to the spots? How would you address this error? 5. If you were teaching a student how to do paper chromatography, what three pieces of...
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