ELECTROCHEMISTRY

What is Electrochemistry?

When chemical changes or reactions occur that are caused by electrical energy applied

What does REDOX mean?

REDOX is the abbreviation for Reduction-Oxidation Reactions

Definitions

What is Reduction? When an atom or ion GAINS one or more

electrons

Na+ + 1e- Na

What is Oxidation? When an atom or ion LOSES one or more

electrons

Cu Cu2+ + 2 e-

O I L R I GXIDATION

S OSS

of

e-

EDUCTION

S AIN

of

e-

Identify the type of half-reactionAg Ag+ + 1e- __________________

Fe2+ + 2e- Fe __________________

Al3+ + 3e- Al __________________

Pd Pd+ + 1e- __________________

Hg2+ + 2e- Hg __________________

Applications of Electrochemistry Electroplating

Layering a metal of atoms over the surface of another metal Car bumpers Pennies

Metal processing Extracting Al3+ ions from the soil and

turning it into pure Al metal Batteries

Converts chemical energy to electrical energy using electrochemical cells