The Electrochemical Series (Leaving Cert Chemistry): Flashcards
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Practise the cards
13 cards from this deck
What does the electrochemical series rank?
What does the electrochemical series rank?
Elements by their tendency to lose electrons
Order of elements in electrochemical series
Order of elements in electrochemical series
Most reactive at top, least reactive at bottom
Reference point for electrochemical series
Reference point for electrochemical series
Hydrogen half-cell
Standard electrode potential of hydrogen
Standard electrode potential of hydrogen
0.00 volts
Most reactive metals in series
Most reactive metals in series
K, Na, Ca, Mg, Al
Least reactive metals in series
Least reactive metals in series
Cu, Hg, Ag, Au
Tendency of metals at top of series
Tendency of metals at top of series
Greater tendency to lose outer electrons
Displacement reaction rule
Displacement reaction rule
More reactive metal displaces less reactive metal
Products when Mg displaces
Products when Mg displaces
What is galvanising?
What is galvanising?
Coating iron/steel with zinc
Why does galvanising protect iron?
Why does galvanising protect iron?
Zn is higher in series, corrodes preferentially
Cathodic protection method
Cathodic protection method
Attach more reactive metal (sacrificial anode) to steel
Industrial use: scrap iron in copper sulfate
Industrial use: scrap iron in copper sulfate
Iron displaces copper from solution