16A.2 Flashcards
What is the electrochemical cell
a device for producing an electric current from chemical reactions. it is constructed of two half-cells
in the salt bridge it is the flow of
ions and not electrons
which half cell would be the negative electrode in the electrochemical cell
the one with the more negative E
what does the line (ا) show in cell diagrams
a change in phase
if the reduced and oxidized form are the same phase how do we represent that in cell diagrams
,
how is the flow of electrons in an electrochemical cells
the electrons flow from the negative electrode to then positive electrode through the external circuit
what is the cell notation of a Pt(s) ions of a solution
Pt(s) ا ion^+2(s) ا ion^+3(aq)
what are the rules of cell notations for an electrochemical cell - cell diagram
- the two reduced forms of the species are shown outside
- the positive electrode is shown on the right-hand side of the cell diagram
- the standard hydrogen electrode is always written on the left hand-side
in cell diagram (: :) represents
salt-bridge
what is the E cell
the difference between to E at the two half cell in the electrochemical cell
how to calculate E cell
E cell = E(more negative) - E(more negative)
