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November 01, 2025, 12:23:30 pm
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Author Topic: Electrolysis Queston  (Read 521 times)  Share 

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nerd

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Electrolysis Queston
« on: September 14, 2009, 06:31:43 pm »
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When a 0.50 M solution of KCl is electrolysed using graphite electrodes for 4.00 mins with a current of 4.60 A, bubbles of gas are evolved at each electrode.

(a) Determine the volume of oxygen gas evolved at the anode at SLC. (I found this to be 70.1 mL)

(b) How would the results of this experiment differ if a 2.0M solution of KCl was electrolysed under the same conditions? (Not sure about this one...)

Any help?
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TheJosh

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Re: Electrolysis Queston
« Reply #1 on: September 14, 2009, 08:14:01 pm »
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(a) yeah 70.1 is correct

(b) I'm not sure bout this one but i think maybe its referring to the higher concentration. As a result of the higher concentration of the KCl, then more chlorine gas will be formed at the anode since water and chloride ions are very close? Someone back me up? Correct me?
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