Cc1ccccc1-n1c(=O)sc2c(=O)n(-c3ccccc3)c(=S)[nH]c21
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 pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the pka value of this molecule?