Conceição Sarmento, L., Magalhães Lima, D. M. ., Ramos, E. Z. ., de Freitas, E. P. B. ., & Souza, R. F. de. (2023). Use of extract of the Alternanthera brasiliana L. as an acid-base indicator in the teaching of chemistry. Scientia Plena, 19(3). https://doi.org/10.14808/sci.plena.2023.034411