Algae impairs water quality and causes taste and odor problems for drinking water treatment plants. The concentration of phosphorous is a key factor controlling algal growth rates in water systems. An aqueous solution contains unknown concentrations of various phosphate species PO;3, HPO;?, H2POA, H3POA). a. Write out the three dissociation reactions_(including their equilibrium constants) for phosphoric acid when placed in water. b. At pH 10, what is the predominant phosphate species in the system? Why?