EDUCATIONAL PROPOSAL IN CHEMISTRY: AQUEOUS EXTRACT OF BLACK BEAN (Phaseolus vulgaris L.) AS A NATURAL pH INDICATOR IN EVERYDAY BEVERAGES. Revista Multidisciplinar do Nordeste Mineiro, [S. l.], v. 20, n. 1, p. 1–16, 2025. DOI: 10.61164/z41mha20. Disponível em: https://remunom.ojsbr.com/multidisciplinar/article/view/4865. Acesso em: 27 nov. 2025.