electrolysis

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jennaa21
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#1
Report Thread starter 4 weeks ago
#1
hey im doing gcse chemistry aqa and im honestly so confused about the whole idea of electrolysis, does anyone have any ideas or videos i can watch to grasp the idea of electrolysis because my exam is soon and i still dont understand it, i understand the basics so the 2 metals in the electrolyte but i dont undertsand everything else like the anode and cathode bit and how do i know what will be produced - i am so confused if anyone has any suggestions that will be appreciated.
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set1xoxo
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#2
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#2
heyy

use freescience lessons or cognito

cations(positive ions) go to anode and lose their electrons,oxygen is produced unless there is a halogen(group 7 element) present

anions(negative ions) go to cathode and gain electrons, hydrogen produced unless there is a less reactive element present(copper,silver or gold)


xx
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jennaa21
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#3
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#3
(Original post by set1xoxo)
heyy

use freescience lessons or cognito

cations(positive ions) go to anode and lose their electrons,oxygen is produced unless there is a halogen(group 7 element) present

anions(negative ions) go to cathode and gain electrons, hydrogen produced unless there is a less reactive element present(copper,silver or gold)


xx
thank u sm!! they r so useful i understand now
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set1xoxo
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#4
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#4
(Original post by jennaa21)
thank u sm!! they r so useful i understand now
omg i am so so sorry i meant that cations go to cathode not anode,
everything else is right just mixed up the cations and anions
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scimus63
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#5
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#5
try here

https://science-revision.co.uk/electrolysis.html
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jennaa21
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#6
Report Thread starter 4 weeks ago
#6
thank you
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