A preocupação ambiental permeia os diferentes âmbitos de ensino e pesquisa tanto nacional como internacional. Não obstante, ainda é possível observar a presença de experimentos, em instituições de ensino superior, que provoque impacto visual como, por exemplo, a precipitação do iodeto de chumbo, um produto químico que contém metal pesado. Evitar a geração de rejeitos químicos perpassa a formação do profissional como parte do seu dia-a-dia. Este artigo relata uma proposta de substituição de um experimento nas aulas de química geral experimental do ensino superior que tem como produto o metal pesado chumbo (Pb) envolvendo uma reação de precipitação por um outro experimento cujo precipitado não apresenta metal pesado. PALAVRAS-CHAVE:reações de precipitação, metal pesado, rejeito químico, ensino superior. PROPOSAL FOR REPLACING EXPERIMENT HEAVY METAL IN CHEMISTRY LESSONS IN HIGHER EDUCATION ABSTRACTThe environmental concern permeates different educational levels and researches both nationally and internationally. Nevertheless, it is still possible to observe the presence of experiments in higher education institutions which causes visual impact, for example, the precipitation of lead iodide, a chemical that contains heavy metal. Avoid generation of chemical waste permeates the professional training as part of their dayto-day. This article reports a proposed replacement of an experiment in experimental general chemistry classes in higher education whose product the heavy metal lead (Pb) involving a precipitation reaction to another with the formation of precipitate without the presence of a heavy metal.
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