Abstract
The speed of sound in ethanol was measured in liquid, near-critical and supercritical fluid over the temperature range from (298.52–655.67) K along five isobaric lines from (0.1–9.0) MPa from Rayleigh-Brillouin light scattering spectroscopy. The expanded relative uncertainty for the reported speed of sound is estimated to be 1.3% with the level of confidence of 0.95 (coverage factor k = 2). The correlation for experimental speeds of sound in liquid ethanol are presented, and the averaged absolute percentage deviation between the calculated values and literature data is 0.16%. The variation tendencies of the speed of sound in ethanol with increasing temperature and pressure were illustrated over the whole investigated p-T region. The accuracy of the three fundamental equations available in the NIST Standard Reference Database 23 were assessed by the experimental speeds of sound in ethanol.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call