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The Chemical Educator
ISSN: 1430-4171 (electronic version)
Abstract Volume 17
(2012) pp 105-111
DOI 10.1007/s00897122427a
Kinetics and Thermodynamics of Solvent Evaporation
Jeramy Baum, Aletrius Booker, William Burch, William Capland, Melan DeBese, Lori Griner, Tiffanie Guy, Riland Jones, Melanie Murphy, Mychal Outlaw, Jatin Patel, Puja Patel, Christopher Pyles, Stephanie Rowe, Tony Sampson, Ted West, Paul Williams, Thomas Manning*
Department of Chemistry, Valdosta State University,
Valdosta, GA, 31698, tmanning@valdosta.edu
Received February 15, 2012.
Accepted May 16, 2012.
Published: 15 June 2012
Abstract. A series of experiments that combine blend kinetic with thermodynamic parameters is outlined. From the simple measurements made over a 60 minutes time scale, students graph and examine over a dozen chemical and physical correlations. In this exercise, students measure the evaporation rates of water-methanol mixtures for sixty minutes using a balance. The evaporation rate (g/min or mL/min) is correlated with parameters taken from the literature such as the heat of evaporation, surface tension and viscosity. The lab can be adapted to a number of chemistry courses.
Key Words: Laboratories and Demonstrations; physical chemistry
(*) Corresponding author. (E-mail: tmanning@valdosta.edu)
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