Write net Bronsted equations that show the acidic or basic nature of the following substances, given the pH. For polyprotic acids, only show one proton transfer. Remember that spectator ions are not included.
lithium dihydrogenphosphate with a pH of 4.70
fish (trimethylamine, C3H9N) with a pH of 8.20
milk (lactic acid, HC3H5O3) with a pH of 6.60
tums antacid (calcium carbonate) with a pH of 8.50