Excess molar volumes of twelve binary nitrile+ketone mixtures (acetoni
trile, butyronitrile or pentanenitrile+propanone, +butanone, +2-pentan
one or +3-pentanone) have been determined from density measurements at
298.15 K using a vibrating-tube densitometer. Excess molar volumes fo
r these mixtures are negative except for butyronitrile or pentanenitri
le+propanone.