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Physical Chemistry
RISHIPRATIM MAZUMDAR's Avatar
RISHIPRATIM MAZUMDAR
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Joined: 16 Jul 2007
Post: 493
1 Mar 2008 23:38:41 IST
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electrochem
None

guys..
i need help wid the representatin of half cells in electrochem....
wot r d diffrnt types of half cells??
can sum1 pls explain me how to undrstand the different representations of half cells lik metal|insoluble salt etc etc......
and to write the half cell reactions??
 
PLS RPLY!!!!
 


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dev_22oct
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Joined: 27 Feb 2008
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1 Mar 2008 23:55:41 IST
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Various type of half cells.
 
Gas ion half cell:
Pt(H2)/H+  , Pt(Cl2)/Cl-
 
Metal metal ion half cell:
Ag/Ag+(aq)
 
Metal insoluable salt anion half cell:
Ag,AgCl/Cl- (aq)
 
 
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dev_22oct
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2 Mar 2008 00:00:52 IST
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Calomel electrode( its imp)
Hg,Hg2Cl2/Cl- (aq)
 
Metal metal oxide hydroxide half cell
Hg,HgO/OH- (aq)
 
Oxidation reduction half cell
Hg/HgSO4/SO42- (aq)
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dev_22oct
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2 Mar 2008 00:04:17 IST
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i m sorry its mercury mercury half cell
 
oxidation reduction half cell
 
Pt/Fe2+ ,Fe3+
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dev_22oct
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2 Mar 2008 00:05:58 IST
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Quinhydrone
half cell
 
Pt/quinhydrone/H+(aq)
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dev_22oct
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Joined: 27 Feb 2008
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2 Mar 2008 00:15:59 IST
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okie dear don't worry lemme try.
 
c for gas ion half cell reaction is
1/2 H2(g)--------------> H+(aq) + e-
 now u can c that hydrogen gas is geting converted into H+ ion by losing electron so the cell reaction w'll be
 Pt(H2)/H+(aq)
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