Does sodium ion effect electrolysis of water?


by kevin_tee
Tags: effect, electrolysis, sodium, water
kevin_tee
kevin_tee is online now
#1
Nov22-13, 04:32 AM
P: 48
Does sodium ion effect electrolysis of water? Especially in sodium polyacrylate, which release sodium ion when absorbs water. In other words, if I try to do electrolysis of water in hydrated sodium polyacrylate will it be successful.(Produce hydrogen and ignoring bubble trap inside the gel)

If I understand correctly, Na+ have much less standard electrode potential than H+ so sodium shouldn't be reduce. Meaning electrolysis will produce hydrogen and oxygen regularly, am I right?

Thanks very much
Phys.Org News Partner Chemistry news on Phys.org
First view of nature-inspired catalyst after ripping hydrogen apart provides insights for better, cheaper fuel cells
Following a protein's travel inside cells is key to improving patient monitoring, drug development
Team helps cancer treatment drugs get past their sticking point
adjacent
adjacent is offline
#2
Nov22-13, 05:16 AM
PF Gold
adjacent's Avatar
P: 858
Yes you are right.In the reactivity series,Na is more
reactive than H.So H+ ions gets discharged more easily.
Borek
Borek is offline
#3
Nov22-13, 05:46 AM
Admin
Borek's Avatar
P: 22,708
You are right about products being oxygen and hydrogen, but presence of any other ions (even if they don't react on electrodes) can't be ignored. They change water conductivity (the more the ions, the higher the conductivity), so you need lower voltage to overcome iR loses. That in turn means presence of spectator ions speeds up the electrolysis.

kevin_tee
kevin_tee is online now
#4
Nov22-13, 06:22 AM
P: 48

Does sodium ion effect electrolysis of water?


Thank for reply so Na+ ion won't be reduce. How about anion polyacrylate chain, will it be oxidize? Any body have an idea?
Borek
Borek is offline
#5
Nov22-13, 06:33 AM
Admin
Borek's Avatar
P: 22,708
It is immobilized, so it doesn't go to electrode. If it were in a direct contact than who knows what would happen.

I believe at least some carboxylic acids can be oxidized to CO2 during electrolysis, but I am not sure.
kevin_tee
kevin_tee is online now
#6
Nov22-13, 07:02 AM
P: 48
Thanks to all replies. This help me very much in my science national competition. I will report my finding when I am ready. I research about Conversation of ultrasonic vibration energy into hydrogen by electrolysis of water using piezoelectric property of ZnO in aqueous solution. Thanks.
adjacent
adjacent is offline
#7
Nov22-13, 07:05 AM
PF Gold
adjacent's Avatar
P: 858
Quote Quote by kevin_tee View Post
Thanks to all replies. This help me very much in my science national competition. I will report my finding when I am ready. I research about Conversation of ultrasonic vibration energy into hydrogen by electrolysis of water using piezoelectric property of ZnO. Thanks.
Good luck


Register to reply

Related Discussions
Does mixing glycerol into water effect electrolysis of water? Chemistry 14
Effect of pressure on electrolysis of water General Physics 6
electrolysis of water Biology, Chemistry & Other Homework 2
Water Electrolysis and Water Dissociation with RF waves General Physics 1