Applying Le Cha^telier's Principle to Model Strong Acid-Strong Base Titration

Autor/in	Mercier, Philippe H.
Titel	Applying Le Cha^telier's Principle to Model Strong Acid-Strong Base Titration
Quelle	In: Journal of Chemical Education, 95 (2018) 4, S.521-527 (7 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Mercier, Philippe H.)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0021-9584
DOI	10.1021/acs.jchemed.7b00575
Schlagwörter	Science Instruction; Scientific Principles; College Science; Undergraduate Study; Chemistry; Problem Solving; Teaching Methods; Equations (Mathematics) + Suchen Sie Ihr Suchwort? Teaching of science; Science education; Natural sciences Lessons; Naturwissenschaftlicher Unterricht; Grundstudium; Chemie; Problemlösen; Teaching method; Lehrmethode; Unterrichtsmethode; Equations; Mathematics; Gleichungslehre
Abstract	Le Châtelier's principle is used as a basis to derive an expression to calculate solution pH during titrations that involve only strong acids and strong bases. Central to this model are the reaction quotient and a re-equilibration term that represents the extent of neutralization during a titration. Unlike the method traditionally taught to students to determine the pH of these acid-base mixtures, the expression obtained is exact and applies throughout the entire range of a titration curve without the need for modification or segmentation. The expression is the same as one that is obtainable using charge balance; however, the present derivation applies Le Châtelier's principle instead, and therefore remains within the scope of a general chemistry curriculum. Instructors are then able to reinforce and deepen understanding of previously learned concepts in acid-base chemistry while connecting them to chemical equilibrium and titration curves. (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