Application of basic chemical principles to understanding the processes that determine the chemical composition of oceans, lakes, rivers, soils, and sediments. Topics include air-water exchange; acid-base, redox, coordination, precipitation and dissolution, ion exchange and sorption reactions; nutrient chemistry; and the use of simple equilibrium and kinetic models for describing the chemistry of inorganic and organic species in air-water-soil systems. Prereq., CHEM 1271. Same as CHEM 5141. Prerequisites: Restricted to students with 57-180 credits (Juniors or Seniors).