Answer third question....
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reduction involve loss of electrons and oxidation involve gain of electron
trick to learn :- OIL RIG( short form)
full form = Oxidation Involve Loss
and Reduction involve gain
at anode electode oxidation takes place and at cathode reduction takes place
trick to learn :- LOAN( short form)
full form :- left oxidation anode negative
since given half cell potential are standered potential or standered reduction potential
Sn is upper then Al in electrochemical series [ in which flourine is on top and li is on bottom ]Sn strong oxidising agent then Al
so Sn oxideises Al and reduce themself
and at anode oxidation takes place so
the anode electride is made up of
also
emf or cell potential is
so emf is
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