Acidity of triorganosilane- and triorganogermane-carboxylic acids. The importance of p_π→d_πbonding

Simplified spectrophotometric determination of acid dissociation constants

“…series of carboxylic acids. The values obtained by this method agree well with the values obtained by a potentiometric method (13). Similar results are found in 76 wt % ethanol-water solvent, except that the pK3 for acetic acid appears to be lower than the values reported in the literature.…”