Login

Search the forums now!

Welcome, Guest. Please login or register.

August 29, 2025, 07:47:23 am
Pages: [1]   Go Down

Author Topic: question about electrolysis  (Read 594 times)  Share 

0 Members and 1 Guest are viewing this topic.

gpflwkd123

  • Victorian
  • Adventurer
  • *
  • Posts: 11
  • Respect: 0
question about electrolysis
« on: August 13, 2011, 04:38:09 pm »
0
hey guys, i have a question about electroylsis that's been really confusing to me :S
so. when you electrolyse NaCl solution, i was told that the products will differ on the concentration of Cl- but i don't understand why :(
Can someone explain it to me please?

Thanks
Logged

Graphite

  • Victorian
  • Forum Obsessive
  • ***
  • Posts: 395
  • Respect: +6
Re: question about electrolysis
« Reply #1 on: August 13, 2011, 05:24:40 pm »
0
Because the electrochemical series only predicts reactions based on standard conditions i.e. 1M solutions
Logged

ellecee

  • Victorian
  • Forum Regular
  • **
  • Posts: 54
  • Respect: +4
Re: question about electrolysis
« Reply #2 on: August 13, 2011, 05:26:40 pm »
0
Although water is a stronger reductant than Cl-, and theoretically should be oxidised in preference, Cl- ions are also oxidised in experiments as they have similar Eo values. To my knowledge, if the conc. is higher than 1M NaCl, Cl2 will be the most common product as the higher concentration makes the oxidation of Cl- more favourable.
Logged

Graphite

  • Victorian
  • Forum Obsessive
  • ***
  • Posts: 395
  • Respect: +6
Re: question about electrolysis
« Reply #3 on: August 13, 2011, 05:28:03 pm »
0
Why does a higher concentration favour the oxidation of Cl-? Please explain.
Logged
Pages: [1]   Go Up