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In this study is reported an interdisciplinary approach to teaching chemistry using case studies seeking to stimulate the students in the learning process as well as to develop their critical thinking. The focuses were in chemical multiple equilibrium from an environmental problem based on the quantitative assessment of the dissolution process of limestone sediment containing in a water body by the action of acid rain and increasing of the CO2 atmospheric concentration. The variables considered were pluviometric average, CO2, SO2 and NO2 levels in the atmosphere as well as their dissolution equilibria and CaCO3 sediment precipitation. This study is an important teaching tool that can be applied in undergraduate and postgraduate chemistry courses with emphasis in Analytical and Environmental Chemistry, engaging students in active discussion about issues and problems inherent to practical applications.

Advanced Treatment of Chemical Equilibria in the Prediction of the Time of Dissolution of Limestone in a Water Body by the Action of Acid Rain