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VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Chemistry => Topic started by: bucket on September 08, 2008, 12:50:40 am

Title: electrolysis
Post by: bucket on September 08, 2008, 12:50:40 am

theres this question in my book.
predict the products at each electrode during electrolysis (using unreactive electrodes) of the following 1M solutions:
a. copper bromide

I identified Br^- as the strongest reductant and Cu²⁺ as the strongest oxidant, but I'm not sure how to actually answer the question lol... will the product at the anode be Br since that's where the Br reaction is taking place or will it be Cu as it is the chemical which is accepting the electrons?

Title: Re: electrolysis
Post by: Collin Li on September 08, 2008, 08:14:00 am

Yeah, you're right. Bromine will be the product at the anode because that is where the bromide ion will deposit its electron (oxidation), while copper will be the product at the cathode because that is where the copper ion will pick up an electron (reduction).