IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => IGCSE/ GCSE => Sciences => Topic started by: thukon on May 30, 2009, 10:10:06 am

Title: Mnemonic for electrolysis
Post by: thukon on May 30, 2009, 10:10:06 am

Does anyone know a good mnemonic for the preference order for ions to be discharged in electrolysis?
A mnemonic is like an acronym for those who dont know.
Any chemistry mnemonics are actually welcome, especially the reactivity series ones.





AND WHY IS MY REP -8??????!!!!!!!!

Title: Re: Mnemonic for electrolysis
Post by: SGVaibhav on May 30, 2009, 10:12:05 am

dude please ask in chemistry thread.

Title: Re: Mnemonic for electrolysis
Post by: thukon on May 30, 2009, 10:24:58 am

Well its a little to late for that.

Title: Re: Mnemonic for electrolysis
Post by: thukon on May 30, 2009, 10:40:07 am

BUMP!!! AND PLZ SOMEONE JUST SAY SOMETHING!!! U GUYS ARENT EVEN ACKNOWLEDGING THIS THREAD EXISTS!!!!

Title: Re: Mnemonic for electrolysis
Post by: X Abdulrahman X on May 30, 2009, 10:48:00 am

they arent any, electolysis is used for many stuff, each one cant possible have an mnemonic, u just have to learn it the hard way :/

Title: Re: Mnemonic for electrolysis
Post by: thukon on May 30, 2009, 10:55:55 am

yeah but theres an order kind of like the reactivity series for which ions are given out and which ones stay in the electrolyte.

Title: Re: Mnemonic for electrolysis
Post by: 12345abc on May 30, 2009, 11:13:31 am

here:
for cations reactivity series:
please-K
send-Na
cats-Ca
monkeys-Mg
and-Al
zebras-Zn
in-iron
large-lead
hired-H
cages-Cu
make-Hg
sure-Ag
padlocked-platinum

for anions:
someone -sulphate
only-hydroxide(gives oxygen on oxidation)
nice-nitrate
cleans-chloride
broken -bromide
items-iodide


for crude oil fractions:
please-petroleum gases
never - naphtha
kill-kerosene
dolphins-diesel oil
living-lubricating oil
bravely-bitumen

for litmus paper,here's how i avoid confusion:
            Be right back
    blue-red-blue
  blue-red(acid)  red-blue(base)

for solubilities,
PCB for sulphates (Pb-lead,Ca-calcium,Ba-barium)

Title: Re: Mnemonic for electrolysis
Post by: thukon on May 30, 2009, 11:19:40 am

WOW THANKS MAN!!! BIG HELP!!! AT LEAST THERE ARE SOME PPL ON THIS FORUM WHO DONT DILLY DALLY BY POSTING TECHNICALLY CORRECT BUT PRACTICALLY USELESS INFO!!! + rep for u.

Title: Re: Mnemonic for electrolysis
Post by: 12345abc on May 30, 2009, 11:27:49 am

Quote from: thukon on May 30, 2009, 11:19:40 am

WOW THANKS MAN!!! BIG HELP!!! AT LEAST THERE ARE SOME PPL ON THIS FORUM WHO DONT DILLY DALLY BY POSTING TECHNICALLY CORRECT BUT PRACTICALLY USELESS INFO!!! + rep for u.

no problem ,and thanx

Title: Re: Mnemonic for electrolysis
Post by: nid404 on May 30, 2009, 11:44:31 am

i know some ppl who get confused with the electrodes; so here's 1

PANIC


Positive Anode Negative Is Cathode

Title: Re: Mnemonic for electrolysis
Post by: thukon on May 30, 2009, 11:56:21 am

Quote from: nid404 on May 30, 2009, 11:44:31 am

i know some ppl who get confused with the electrodes; so here's 1

PANIC


Positive Anode Negative Is Cathode

Cool, but the electrodes are already kinda embedded in my head, because i did a course in roots, and the prefix cat- means negative.

Title: Re: Mnemonic for electrolysis
Post by: thukon on May 30, 2009, 11:59:06 am

AHHHH WAIT A SECOND!!! MY BOOK SAYS THAT HYDROXIDE IS DISCHARGED AFTER NITRATES
So ill remember it as Someone Nice Only Cleans Broken Items.

Title: Re: Mnemonic for electrolysis
Post by: nid404 on May 30, 2009, 12:09:45 pm

Theres another 1 to remember the fractions

Rolling------Refinery gas
Guns-------Gasoline
Nearly------Naphtha
Killed-------Kerosene
Drunk-------Diesel oil
Funny------Fuel oil
Limping-----Lubricating oil
Robber------Residue

Title: Re: Mnemonic for electrolysis
Post by: 12345abc on May 30, 2009, 09:05:56 pm

here's another one ... i usually get confused in whether oxidation occurs at cathode or electrode, so, i keep in my mind the 5th letters,like:

 oxidAtion - Anode
 reduCtion - Cathode

@thukon- yesss hydroxide is discharged in preference!!! thanx for reminding,so now it is some1 nice only cleans broken items ;D

Title: Re: Mnemonic for electrolysis
Post by: AS girl on May 30, 2009, 10:58:29 pm

Quote from: nid404 on May 30, 2009, 12:09:45 pm

Theres another 1 to remember the fractions

Rolling------Refinery gas
Guns-------Gasoline
Nearly------Naphtha
Killed-------Kerosene
Drunk-------Diesel oil
Funny------Fuel oil
Limping-----Lubricating oil
Robber------Residue

+rep for u!!!!

Just liked ur way ;)

Title: Re: Mnemonic for electrolysis
Post by: nid404 on May 31, 2009, 06:44:58 am

Quote from: IG girl on May 30, 2009, 10:58:29 pm

Quote from: nid404 on May 30, 2009, 12:09:45 pm

Theres another 1 to remember the fractions

Rolling------Refinery gas
Guns-------Gasoline
Nearly------Naphtha
Killed-------Kerosene
Drunk-------Diesel oil
Funny------Fuel oil
Limping-----Lubricating oil
Robber------Residue

+rep for u!!!!

Just liked ur way ;)

thanks. funny stuff's always easier to remember

dunno if ull know this(very common way of learning redox) but it's easy to remember

OILRIG

Oxidation Is Loss(of electrons) Reduction Is Gain(of electrons)

Title: Re: Mnemonic for electrolysis
Post by: thukon on May 31, 2009, 07:03:04 am

yeah oilrig is popular.

AHHH Angell, u edited 12345abc's post wrong. Its someone NICE ONLY cleans broken items. Not someone ONLY NICE cleans broken items.

Title: Re: Mnemonic for electrolysis
Post by: SGVaibhav on May 31, 2009, 07:09:25 am

what is wrong with ur rep thukon??
i made it + now, so it is -10 from -11

Title: Re: Mnemonic for electrolysis
Post by: wildrider on May 31, 2009, 07:21:24 am

YUP whts wrong.

Title: Re: Mnemonic for electrolysis
Post by: nid404 on May 31, 2009, 07:23:57 am

ill help in making it better

Title: Re: Mnemonic for electrolysis
Post by: zara on May 31, 2009, 07:57:57 am

Quote from: 12345abc on May 30, 2009, 09:05:56 pm

here's another one ... i usually get confused in whether oxidation occurs at cathode or electrode, so, i keep in my mind the 5th letters,like:

 oxidAtion - Anode
 reduCtion - Cathode

@thukon- yesss hydroxide is discharged in preference!!! thanx for reminding,so now it is some1 nice only cleans broken items ;D

yea...theres one mor way....sum might find this easy.. ;D
RED CAT and AN OX
(Reduction at Cathode and Oxidation at Anode)

Title: Re: Mnemonic for electrolysis
Post by: thukon on May 31, 2009, 09:42:30 am

I dont know why my rep keeps going down. Yesterday it was like -7.

Title: Re: Mnemonic for electrolysis
Post by: cactus_360 on May 31, 2009, 10:10:34 am

oilrrg

u guys probably be knowing that

oxidation is loss of e
reduction is gain of e

Title: Re: Mnemonic for electrolysis
Post by: idk on May 31, 2009, 10:29:53 am

hey even i hve one.-CAR Cathode - Reduction
hope this helps.chem rocks!

Title: Re: Mnemonic for electrolysis
Post by: zara on May 31, 2009, 10:36:41 am

Quote from: cactus_360 on May 31, 2009, 10:10:34 am

oilrrg

u guys probably be knowing that

oxidation is loss of e
reduction is gain of e

its oil rig......u typed two "r"....

Title: Re: Mnemonic for electrolysis
Post by: cactus_360 on May 31, 2009, 10:50:22 am

OOPS ,MY BAD

Title: Re: Mnemonic for Reactivity Series
Post by: mohd06 on May 31, 2009, 11:06:18 am

Police - Potassium

Sergeant - Sodium

Charlie - Calcium

M - Magnesium
A - Aluminium
C - Carbon
Z - Zinc
I - Iron
N - Nickel
T - Tin
L - Lead

Has - Hydrogen

Caught - Copper

Me - Mercury

Stealing - Silver

Gold - Gold

Plates - Platinum

Title: Re: Mnemonic for electrolysis
Post by: rainbow_pmondal on June 01, 2009, 03:44:38 am

Oxidation
Is
Loss of electrons

Reduction
Is
Gaining of electrons