Excess compressibility and excess dielectric constant for a morpholine-n-butyl alcohol liquid mixture

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Abstract
The variation in excess compressibility beta SE and excess dielectric constant in 'E as a function of mole fraction x at room temperature have been determined for a liquid mixture of morpholine (as the solute) with n-butyl alcohol (as the solvent). The excess compressibility was found to be negative for this liquid mixture and is explained in terms of solute-solvent interactions. The excess dielectric constant was found to be abnormally positive for this liquid mixture at a mole fraction of around 0.25 and is explained in terms of the alignment of dipoles.