Vitor Paulo Andrade da Silva^1,, Pablo Gordiano A. Barbosa², Thiago Coutinho Medeiros¹, Ronaldo Ferreira do Nascimento^1,

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.

environmental chemistry, computer-based learning, atmospheric chemistry, computational chemistry, acid-base chemical equilibrium