Cc1cc(/C(O)=C(/C([S-])=Nc2ccc(F)cc2)[n+]2ccccc2)c(C)n1Cc1ccccc1Cl
The negative base-10 logarithmic of dissociation constant (pKa) for an acid is a direct consequence of the underlying thermodynamics of the dissociation reaction; the negative pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the negative pKa value of this molecule?