RedoxReactions Flashcards
what is the pull or driving force on the electrons in a cell is called…
cell potential or electromotive force
unit for electrical potential
voltage
volt =
joule of work/coulomb of charge
higher on the table will be ______, lower will be_______
reduction, oxidation
E degrees symbol is the symbol for
standard cell potential.
a positive standard cell potential means that the reaction is
spontaneous
because the conventional notation is to write half reactions as reduction reactions, oxidation reaction standard cell potential must be
negated (flipped to opposite) when to equation is flipped
REMEMBER TO BALANCE THE ELEMENTS BEFORE WRITING THE FRICKIN ELECTRON. aLSO, REMEMBER, THE NUMBER MATTERS IN THE CHARGE.
REMEMBER TO BALANCE THE ELEMENTS BEFORE WRITING THE FRICKIN ELECTRON. aLSO, REMEMBER, THE NUMBER MATTERS IN THE CHARGE.
use of a salt bridge
permits the migration of IONS but does not allow the solutions to mix. this prevents charge build up.
anode is
oxidized
cathode is
reduced
more reactive metals…
lose more electrons, are the ones being OXIDIZED
in what direction do electrons flow
from anode to cathode, ie from the most active metal (the one being oxidized) to the least active metal.
galvanic cell
a device in which chem. energy is changed to electrical energy spontaneously
when a chemical cell has reached equilibrium, its charge is
zero
corrosion
state of deterioration in metals caused oxidation or chemical action
noble metals
metals like copper, gold, silver and platinum that are relatively difficult to oxidize
rust is the ____ area
cathodic
the nonmetal closest to the top of the Table J Activity Series is
most active, therefore most likely to be reduced
the metal closest to the top of the Activity Series is
most likely to be oxidized
electrolysis
the use of an electric current to bring about a chemical reaction
in chemical (Galvanic) cells, the cathode is
positive, anode is negative
in electrolytic cells the cathode is
negative, the anode is positive
in electroplating, the object to be plated is the
cathode
the material used for plating is the
anode
the electrolyte used for plating is
a suitable salt of the metal that is the anode
