The words contained in this file might help you see if this file matches what you are looking for:

...Lecture redox chemistry many elements in the periodic table can exist more than one oxidation state states are indicated by roman numerals parentheses e g i iv etc represents electron content of an element which be expressed as excess or deficiency electrons relative to elemental for example species nitrogen n v no iii o nh sulfur s vi so ii hs iron fe manganese mn mno mnooh why study reduction reactions fuel and constrain almost all life processes a major determinant chemical present natural environments characterized transfer between see following full reaction cupric ion with metallic zinc zn cu above thought consisting two simultaneous half lost gained comprising referred couple written form reductions means is transformed from higher lower ox ne red where oxidized on left reduced right number transferred we write equilibrium constant this any other formally concentrations should activities thus k also rearrange equation determine activity usually either pe eh scales shown below lo...