Abstract
Molar excess enthalpies H E of methyl acetate + methanol, + butan-1-ol, + hexan-1-ol, + decan-1-ol have been measured as a function of the liquid composition at 298 K using an isothermal flow calorimeter. H E is positive in all cases ranging from 1000 J mol (methanol) to 2400 J mol (decan-1-ol) in the maximum of the H E curve. Application of a theoretical model which accounts for hydrogen bonding effects as well as for non polar physical interactions indicates that the physical contribution to H E is unusually large compared to the chemical contribution due to hydrogen bonding effects.
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