Which hydrogen-bonding interactions dominate solute transfer into isobutyl acetate?

Label:chem

Topic
Abraham model coefficients indicate the direction and magnitude of each interaction.
Answer
The large negative ap and bp coefficients (–1.050 and –4.982 respectively) show that hydrogen-bond acidity (A) and basicity (B) of the solute strongly disfavour transfer from water into isobutyl acetate, whereas the large positive vp (4.212) favours larger, more hydrophobic molecules.
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