@article{lindgren_2026,  title={THE NATURE OF THE EQUILIBRIUM CONSTANT},  volume={49},  ISSN={0100-4042},  url={https://doi.org/10.21577/0100-4042.20260069},  DOI={10.21577/0100-4042.20260069},  journal={Química Nova},  publisher={Sociedade Brasileira de Química},  author={Lindgren, Eric B.},  year={2026},  pages={e–20260069} }