Creating and Experimenting with a Low-Cost, Rugged System to Visually Demonstrate the Vapor Pressure of Liquids as a Function of Temperature

Autor/inn/en	Papai, Rodrigo; Romano, Majara Araujo; Arroyo, Aline Rodrigues; Rodrigues da Silva, Bárbara; Tresoldi, Bruno; Winter, Gabriela Cabo; Costa, Julia Messias; Freitas Santos, Maria Aparecida; Prata, Matheus Damasceno; Gaubeur, Ivanise
Titel	Creating and Experimenting with a Low-Cost, Rugged System to Visually Demonstrate the Vapor Pressure of Liquids as a Function of Temperature
Quelle	In: Journal of Chemical Education, 96 (2019) 2, S.335-341 (7 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Papai, Rodrigo) ORCID (Gaubeur, Ivanise)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0021-9584
Schlagwörter	Physics; Chemistry; Laboratory Experiments; Science Experiments; Hands on Science; Visual Aids; Science Instruction; College Science; Foreign Countries; Brazil + Suchen Sie Ihr Suchwort? Physik; Chemie; Laboratory work; Laborarbeit; Anschauungsmaterial; Teaching of science; Science education; Natural sciences Lessons; Naturwissenschaftlicher Unterricht; Ausland; Brasilien
Abstract	A creative apparatus for use in a hands-on laboratory experiment that allows the visualization of the vapor pressure as a function of temperature is described in this paper. Inspired by homemade barometers and using simple materials that are easily accessible for teaching laboratories, a lowcost system for the establishment of the vapor-pressure curve was constructed and applied in deionized water and in car-radiator-additive samples (based on ethane-1,2-diol) at different concentrations. The system constructed proved to be efficient, simple, and quite robust and is applicable in teaching activities for comparing and visualizing vapor-pressure curves of different liquids. It can also be used to estimate the molar enthalpy of water vaporization. The main advantages and drawbacks of the apparatus created, the results obtained for liquid samples, and the evaluation of the ruggedness of this experiment are described throughout the text. The establishment of this system is the result of a project developed by first-year-undergraduate students along with postgraduate students and professors from the Bachelor's Program of Science and Technology, hosted by the Universidade Federal do ABC, as part of the innovative course the Experimental Basis of Natural Sciences, a practical course which seeks to build knowledge through experimentation. (As Provided).
Anmerkungen	Division of Chemical Education, Inc. and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01