Redox I Flashcards
What does a half equation show
Shows the gain or loss of electrons and is balanced for atoms and charge
What is oxidation
Loss of electrons
What is reduction
Gain of electrons
What does the oxidation state number represent
represents the number of electrons lost/gained by an atom relative to its elemental/atomic state.
Whats an oxidising agent
a species that oxidises other species (by gaining electrons from them)
Whats a reducing agent
a species that reduces other species (by losing/giving electrons to them)
What does the overall redox equation showing
the species or ions changing oxidation states.
What is a half cell / electrode
an equilibrium system consisting of a solid metal in a solution of its own ions.
What is electrode potential?
a measure of the equilibrium position for a half-cell / electrode.
What is the standard electrode potential
the voltage produced by a half-cell when connected to a standard hydrogen electrode, under standard conditions (298K, 100kPa, all solutions 1 mol dm-3)
