Galvanic Cells and Standard Electrode Potentials (HSC SSCE Chemistry): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
ShowHide
Practise the cards
10 cards from this deck
Three main types of electrodes in galvanic cells
Three main types of electrodes in galvanic cells
Metal in metal ion, inert in mixed ions, gas electrode
Metal in metal ion electrode composition
Metal in metal ion electrode composition
Metal dips in solution of its own ions; metal reacts
Function of inert electrode (Pt or graphite)
Function of inert electrode (Pt or graphite)
Provides electron pathway; doesn't react chemically
Gas electrode configuration
Gas electrode configuration
Gas bubbles over inert conductor in solution
Anode in galvanic cell
Anode in galvanic cell
Where oxidation occurs; negative terminal
Cathode in galvanic cell
Cathode in galvanic cell
Where reduction occurs; positive terminal
Electron flow direction in external circuit
Electron flow direction in external circuit
From negative to positive terminal
Memory aid for anode and cathode
Memory aid for anode and cathode
An Ox, Red Cat (Anode=Oxidation, Cathode=Reduction)
Salt bridge function
Salt bridge function
Allows ion migration to maintain electrical neutrality
Why must oxidation and reduction be separated?
Why must oxidation and reduction be separated?
Forces electrons through external circuit for usable energy