Question

question 7
12.5 pts
the -oh groups in the silica-gel are most attracted to molecules that are ______?
backing (glass or al)
options: non-polar, dipolar, polar, unipolar

Explanation:

The -OH groups in silica - gel are polar (due to the electronegativity difference between O and H, creating a dipole moment). Polar molecules interact favorably with other polar species through dipole - dipole interactions (including hydrogen bonding, as - OH can form H - bonds with other polar molecules with electronegative atoms like O, N, F). Non - polar molecules have no significant dipole, so they don't interact strongly with polar - OH groups. Dipolar is a less precise term here, and unipolar is not a standard term for molecular polarity in this context. So the - OH groups are most attracted to polar molecules.

Answer:

C. polar