Abstract
A flow heat capacity calorimeter and a flow vibrating tube densimeter have been used to measure the apparent molal heat capacities and volumes of 14 linear and branched alkanes in methanol at 25°C. These quantities have been extrapolated to infinite dilution to obtain the standard partial molal heat capacities and volumes. The Cp2o and V2o data can be expressed by equations having the general form: Y=AY+Σ Nk Yk+Σ(steric factors), where AY is solute independent and the Yk terms are the individual group contributions. A rationale for use of the above equation is presented.
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