In a “Bionic” device created by Dan Nocera, this reaction is driven by a self-assembling cobalt-phosphate cluster and a nickel-molybdenum-zinc catalyst. The center of an enzyme that catalyzes this reaction is coordinated by the aspartate and glutamate residues of D-sub-1 and CP-sub-43. (15[1])Titanium dioxide nanoparticles were found to catalyze this reaction on their surfaces by Honda and Fujishima. This reaction’s reactant and molecules like sulfuric acid are added to the middle cylinder and a current is run through the system to produce this reaction’s products in a three-cylinder apparatus named for (*) Hoffman. This reaction is driven by the movement of electrons from S0 to S4 in (-5[1])a complex named for the (10[1])evolution of one of this reaction’s products. For 10 points, name this reaction in which a namesake molecule is broken down into hydrogen (-5[1])and oxygen (-5[1])gas. ■END■ (10[2]0[3])