Solution calorimetry was used to determine enthalpies and stability constan
ts for binding of lead(II) or cadmium(II) by galacturonic acid and several
monosaccharides in aqueous solution. New values for enthalpies of solution
in water are reported for galacturonic acid and maltose monohydrate. The in
teraction of water solvent with the reactants is the largest factor in the
binding process.