5.2.3-redox and electrode potential Flashcards
what is an oxidising agent
contains the species being reduced
what is an reducing agent
contains the species being oxisided
which one is the positive electrode
the electrode with the more reactive metal loses electrons and turns into the aqueous ion
this is oxidation and this is the negative electrode
which one is the negative electrode
this electrode with the less reactive metal gains electrons and the aqueous ions are reduced
this is the positive electrode
what are the 2 types of half cells
-metal ion/metal half cell
-metal ion/metal ion half cell
draw the standard hydrogen electrode
in booklet
what does a salt bridge do
-a piece of filter paper that had been soaked in potassium nitrate
-allows ions to flow
what does it mean if a E value is more positive
-shifts to the right and undergoes reduction
what does it mean if a E note value is more negative
shifts to the left and undergoes oxidation
how do you calculate the standard cell potential
e (positive)- E (negative)
for a reaction to be feasible what must the E note value be
the overall E note value must be positive
if the reaction is feasible will it definatly happen
no
activation energy may be too large
non-standard conditions
other factors that affect feasibility
concentration
