Compare the properties of propan-2-ol (I) and the hexafluoro analog (II).

(a) Compound II has almost triple the molecular weight of I, but II has a lower boiling point. Explain.
(b) Explain why the dipole moment of Compound II is much lower than the dipole moment of I, despite the presence of the six electronegative fluorine atoms.
(c) Why is II a stronger acid than I?

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он он H3C CH3 F3C CF3 mol. wt. 60 g/mole boiling point 82 °C dipole moment 1.66 D pKa 16.5 mol. wt. 168 g/mole boiling point 58 °C dipole moment 0.32 D pKa 9.3