Chapter 23 Redox and electrode potentials

ion/ion half cells

this type of half cell is needed when redox system does not contain a metal or where both the oxidised and reduced species in the half equation are ions

fuel cells

a fuel cell uses the energy from the reaction of a fuel with oxygen to create a voltage

primary cells

non rechargeable cells, the cell reaction cannot be reversed

secondary cells

rechargeable cells- the cell reaction is reversed during the recharging processes regenerating the chemicals in the cell

metal/metal ion half cell

a half cell contains the chemical species present in a redox half equation

electrochemical cell

two half cells must be joined together in order for electrons to flow from one half cell to the other through the wires (- to +)

standard electrode potential

the tendency to be reduced and gain electrons