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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: donshishi on December 15, 2008, 02:11:07 PM

Title: electrolysis, calcium chloride
Post by: donshishi on December 15, 2008, 02:11:07 PM
The anode reaction is 2Cl- -> Cl2 (g) + 2e-   
and the cathode reaction is Ca2+ + 2 e- -> Ca(s)
Is this correct, or have I mixed these up?
Title: Re: electrolysis, calcium chloride
Post by: Astrokel on December 15, 2008, 02:25:49 PM
yes correct for electrolysis of molten calcium chloride. Always remember Anode is Oxidation and Cathode is where reduction takes place and you won't go wrong.

Just my silly way of memorizing, AO = Atomic Orbital = Anode Oxidation.   CR = Cathode Ray = Cathode Reduction. If it doesn't make any easier for you just forget it. :-\
Title: Re: electrolysis, calcium chloride
Post by: AWK on December 16, 2008, 01:11:37 AM
compare to NaCl solution electrolyis
http://chemed.chem.purdue.edu/genchem/topicreview/bp/ch20/faraday.php