electrochemical cells + spontaneity

two types of cells

galvanic/voltaic

electrolytic

voltaic/galvanic cells

an electrochemical cell that converts chemical energy from spon redox rxns into electrical energy, functioning as a battery

what makes up a galvanic cell

two half cells (separate) with electrodes connected by a wire producing electricity, and a salt bridge

function of salt bridge

ensures electrical neutrality and prevents solution mixing

electrolytic cell

uses electricity to drive non spontaneous rxns

components of electrolytic cell

molten ionic compound or an electrolyte

two conductors

single container unlike galvanic cells (both electrodes are in the same solution, so often no salt bridge)

where does electroplating occur

electrolytic cell

when is e cell spontaneous

positive

when is e cell non spontaneous

negative