October 06, 2024, 07:29:49 PM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: why graphite become unusable?  (Read 3427 times)

0 Members and 1 Guest are viewing this topic.

Offline pijoe

  • New Member
  • **
  • Posts: 4
  • Mole Snacks: +0/-0
why graphite become unusable?
« on: October 23, 2007, 03:59:28 PM »
i've done brine electrolysis experiment and i managed to gain chlorine gas from the experiment. then i used the same graphite electrode to run one more experiment. but the reaction (bubbles produce) was very very slow compared to my first experiment. it seems like the graphite electrode become unusable. why this thing happens? as i know, we can continuously produce chlorine gas  if the brine is circulate and its concentration is maintain. but in may case, i need to change the graphite electrode every time i run the experiment. anybody can help me here?
Logged

Offline Bakegaku

  • Full Member
  • ****
  • Posts: 269
  • Mole Snacks: +20/-5
  • Gender: Male
  • Hydrogen peroxide is my miracle cure to everything
Re: why graphite become unusable?
« Reply #1 on: October 25, 2007, 12:04:37 AM »
Chlorine gas is a very reactive chemical, and given the fact that it's being formed from Cl- and that constant electron transfers would be happening at the electrode, it wouldn't be unreasonable to assume that the process has been corroding it.  Other than that, are there any other potential impurities in the brine solution?  How did you prepare it?
Logged
"True knowledge exists in knowing that you know nothing"
-Socrates

"I see, I forget.  I hear, I remember.  I do, I understand"
-Confucius

"Nothing will benefit human health and increase chances for survival of life on Earth as much as the evolution to a vegetarian diet."
- Albert Einstein?

"American cartoons place characters in situations; anime
places situations around characters.  Anime characters
are not like fictional characters but more like fictional
people; their actions stem directly from their personalities,
and not just as a means to move the story's plot
forward.  We are made to sympathize with them, and
not simply be entertained by them."
~John Oppliger~

Offline 03myersd

  • New Member
  • **
  • Posts: 4
  • Mole Snacks: +0/-0
Re: why graphite become unusable?
« Reply #2 on: October 27, 2007, 09:14:08 AM »
I'm not sure if this would affect it or not but would it matter if you accidentally switched the electrodes around? So that the positive electrode is now covered in Sodium?
Logged
Pages: [1]   Go Up
« previous next »
Sponsored Links