In paper and gas chromatography, how are intermolecular forces involved between the compounds that are to...
In paper and gas chromatography, how are intermolecular forces involved between the compounds that are to be separated? What if the stationary and mobile phases are non-polar and the compounds are polar or vice-versa? How do intermolecular forces affect retention time/retention factor?
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In paper and gas chromatography, how are intermolecular forces
involved between the compounds that are to...
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1. What is the purpose of Thin-Layer Chromatography (TLC)? 2. What are the phases involved in TLC? 3. What is coated on the TLC plate? 4. What is the purpose of lining the wall of the TLC chamber with paper? 5. Why is it important to use a small amount of the mobile phase? 6. Why should you remove the TLC plate before the mobile phase reaches the top? 7. What type of compounds are visible with UV light? 8....
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2. What are the phases involved in TLC? 3. What is coated on the TLC plate?...
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2. If two different compounds have the same Rr value, how might they be identified using paper chromatography?...
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A mixture of two compounds (A and B) was separated by gas chromatography on a non-polar...
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1. What is the purpose of Thin-Layer Chromatography (TLC)? 2. What are the phases involved in TLC? 3. What is coated on the TLC plate? 4. What is the purpose of lining the wall of the TLC chamber with paper? 5. Why is it important to use a small amount of the mobile phase? 6. Why should you remove the TLC plate before the mobile phase reaches the top? 7. What type of compounds are visible with UV light? 8....
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...
Lab #2: Gas Chromatography Theory behind gas chromatography What do all types of chromatography share in common? Relationship between retention time and boiling point/vapor pressure How changing parameters affect the retention time Ramp rate Temperature Length of column Pressure Whether column is packed or unpacked
2. What are the phases involved in TLC? 3. What is coated on the TLC plate? 4. What is the purpose of lining the wall of the TLC chamber with paper? 5. Why is it important to use a small amount of the mobile phase? 6. Why should you remove the TLC plate before the mobile phase reaches the top? 7. What type of compounds are visible with UV light? 8. With a polar stationary phase and non-polar mobile phase,...
2. (5) How is column chromatography related to TLC? Gas chromatography? Be sure to discuss mobile phase, stationary phase, sample size, sample type in your answer. 3. (2) How is Rf in TLC related to elution order in column chromatography? What do you expect to come out first and last?
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...
Week 11- Concept Questions Explain what type of forces, Intermolecular or Intramolecular are involved in the following processes. How do you know? How is this related to chemical vs physical changes? Forces overcome when ice melts Forces overcome when gaseous water is converted into hydrogen gas and oxygen gas Forces that prevent ice cubes from taking on the shape of their container Forces overcome when liquid water is vaporized
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