Abstract

RAVIOLO, Andrés. Design of spreadsheets as tools for learning acid-base equilibrium: use of the scroll bar. Educ. quím [online]. 2012, vol.23, n.3, pp.355-360. ISSN 0187-893X.

This article presents a simple and conceptual application of the spreadsheet and the scroll bar to find the composition of a system in chemical equilibrium, for various situations related to monoprotic acid equilibrium. This method allows to simulate different situations such as a) weak acid dilution, b) common ion effect, c) buffer solutions, and d) the composition of a very dilute acid or an acid of very low acid-dissociation constant.

Keywords : acid-base equilibrium; spreadsheet; scroll bar; teaching of chemical equilibrium.