Podcast
Questions and Answers
What is the chemical formula of silica gel?
What is the chemical formula of silica gel?
- SiO4
- SiO3
- SiO2 (correct)
- SiO
How does the polarity of silica gel compare to alumina?
How does the polarity of silica gel compare to alumina?
- Silica gel is less polar than alumina. (correct)
- Silica gel is more polar than alumina.
- Silica gel and alumina have the same polarity.
- Silica gel has no polarity, while alumina is polar.
What type of adsorbent is silica gel?
What type of adsorbent is silica gel?
- Acidic adsorbent (correct)
- Basic adsorbent
- Non-adsorbent
- Neutral adsorbent
Which compounds does silica gel preferentially retain?
Which compounds does silica gel preferentially retain?
What is the relationship between the polarity of silica gel and its adsorption properties?
What is the relationship between the polarity of silica gel and its adsorption properties?
What type of interactions does the compound exhibit?
What type of interactions does the compound exhibit?
How do polar analytes interact with the stationary phase in TLC?
How do polar analytes interact with the stationary phase in TLC?
Why do polar analytes move very slowly up the TLC plate?
Why do polar analytes move very slowly up the TLC plate?
Which type of bonding is most likely responsible for the slow movement of polar analytes up the TLC plate?
Which type of bonding is most likely responsible for the slow movement of polar analytes up the TLC plate?
What effect do dipole-dipole interactions have on the movement of polar analytes in TLC?
What effect do dipole-dipole interactions have on the movement of polar analytes in TLC?
What are the 2 most common adsorbents used in chromatography?
What are the 2 most common adsorbents used in chromatography?
Which material is NOT commonly used as an adsorbent in chromatography?
Which material is NOT commonly used as an adsorbent in chromatography?
Which of the following is a common misconception about chromatography adsorbents?
Which of the following is a common misconception about chromatography adsorbents?
Why are porous alumina and porous silica gel commonly used as adsorbents in chromatography?
Why are porous alumina and porous silica gel commonly used as adsorbents in chromatography?
What is a key advantage of using porous alumina and porous silica gel in chromatography applications?
What is a key advantage of using porous alumina and porous silica gel in chromatography applications?
Which statement is true about the mobile phase in thin-layer chromatography (TLC)?
Which statement is true about the mobile phase in thin-layer chromatography (TLC)?
How do nonpolar analytes interact with the components of a TLC plate?
How do nonpolar analytes interact with the components of a TLC plate?
What happens to nonpolar analytes on a TLC plate?
What happens to nonpolar analytes on a TLC plate?
Which of the following is true about the interaction between analytes and the components of a TLC plate?
Which of the following is true about the interaction between analytes and the components of a TLC plate?
What is the purpose of using a relatively nonpolar mobile phase in TLC?
What is the purpose of using a relatively nonpolar mobile phase in TLC?
