%0 Journal Article
%T Predicting the Enthalpy of Vaporization and Calculating the Entropy of Vaporization of 87 Octane Gasoline Using Vapor Pressure
%A Shawn M. Abernathy
%A Kelly R. Brown
%J Open Access Library Journal
%V 3
%N 9
%P 1-11
%@ 2333-9721
%D 2016
%I Open Access Library
%R 10.4236/oalib.1102954
%X
The vapor pressure (VP) of 87 grade gasoline was
measured using an enhanced VP acquisition system over a temperature range of
approximately 19.0¡æ (292.2 K) and 69.0¡æ (342.2 K). The empirical data were used to predict the
thermodynamic entities the enthalpy of vaporization (¦¤Hvap) and the entropy of vaporization (¦¤Svap) of gasoline. The
results of this investigation yielded a ¦¤Hvap value of 35.1 kJ/mol and ¦¤Svap of 102.5 J/mol¡¤K. The value of ¦¤Hvap was in excellent agreement with the findings of a prior study (Balabin et al., 2007), which produced a ¦¤Hvap values of 37.3 kJ/mol and 35.4 kJ/mol. The enthalpy and entropy of vaporization
of n-heptane (37.2 kJ/mol and 100.1 J/mol¡¤K) and n-octane (39.1 kJ/mol and 98.3
J/mol¡¤K) were also determined after acquiring VP data for the two VOCs. The
empirical results for n-heptane and n-octane were also in excellent agreement
with the literature. These favorable comparisons strengthen the capacity of our
system for acquiring the VP data for pure and volatile multi-component
mixtures.
%K Gasoline
%K Vapor Pressure (VP)
%K Enthalpy of Vaporization
%K Entropy of Vaporization
%K Volatile Organic Compounds (VOCs)
%U http://www.oalib.com/paper/5271944