science_guy1
Harmless
Posts: 2
Registered: 4-4-2013
Member Is Offline
Mood: No Mood
|
|
which terminal is the cathode
i see two different definitions for a cathode. in a cathode ray electrons flow from the cathode to the anode. in a galvanic cell electrons flow from
the anode to the cathode. am i missing something or are there two opposite definitions?
|
|
|
elementcollector1
International Hazard
Posts: 2684
Registered: 28-12-2011
Location: The Known Universe
Member Is Offline
Mood: Molten
|
|
The thing you're missing is that the electrons run the opposite way for each device (galvanic gives off electrons, cathode ray and electrolytic cells
intake electrons).
Elements Collected:52/87
Latest Acquired: Cl
Next in Line: Nd
|
|
|
DraconicAcid
International Hazard
Posts: 4280
Registered: 1-2-2013
Location: The tiniest college campus ever....
Member Is Offline
Mood: Semi-victorious.
|
|
The Cathode is where reduCtion takes place.
OxidAtion takes place at the Anode.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
|
|
|
Endimion17
International Hazard
Posts: 1468
Registered: 17-7-2011
Location: shores of a solar sea
Member Is Offline
Mood: speeding through time at the rate of 1 second per second
|
|
or, even simpler mnemonic device:
cathode - reduction (consonants)
anode - oxidation (vowels)
|
|
|
BromicAcid
International Hazard
Posts: 3229
Registered: 13-7-2003
Location: Wisconsin
Member Is Offline
Mood: Rock n' Roll
|
|
These are the two I fall back on most of the time.
RedCat - Reduction occurs at the Cathode
OILRIG - Oxidation involves loss, reduction involves gain (of electrons)
|
|
|
Fantasma4500
International Hazard
Posts: 1677
Registered: 12-12-2012
Location: Dysrope (aka europe)
Member Is Offline
Mood: dangerously practical
|
|
not sure if this is what youre asking for, but i remember anode and cathode as A+ as the grade A+ (Anode is plus, +) where cathode is the opposite (-)
the positively charged metal ions will go to the negative end (opposites attract) aswell as hydrogen
if you run electrolysis through water it should be easy to see as theres much much more hydrogen formed than oxygen, also bubbles rise faster due to
less gravitational weight and many times lower density than oxygen (16 times less)
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
