is cathod positive pole or negetive pole?

[joonkimdds]

Cathode where the reduction takes place.
For example, Na2+ ==> Na+ + 1e(-)

So does this mean cathode is a positive pole or negative pole?

Since it takes negative(electron) away, I am guessing that it should be positive, but then why does it attract positive amino acid under electrolysis?

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[JBarr29]

The cathode is positive and the anode is negative in an electrochemical cell(GALVANIC). The cathode is negative and the anode is positive in a electrolytic cell. Cations flow to the cathode and anions flow to the anode regardless of cell type.

 

[Maygyver]

The way I remember that it's positive is this: The t in cathode looks like a + charge. Anode has an n in it for negative. Hope this helps.

 

[Chesnok]

The cathode is positive and the anode is negative in an electrochemical cell(GALVANIC). The cathode is negative and the anode is positive in a electrolytic cell. Cations flow to the cathode and anions flow to the anode regardless of cell type.

I think this is for electrolyitc cell when - chrged anions go to the + anode. So, it's in the case of electrolytic cell. IMO tho.

 

[klutzy1987]

The cathode is positive and the anode is negative in an electrochemical cell(GALVANIC). The cathode is negative and the anode is positive in a electrolytic cell. Cations flow to the cathode and anions flow to the anode regardless of cell type.

Im pretty sure this is exactly correct, although i do not remember which one is which.

 

[nitrolegs]

The cathode is positive and the anode is negative in an electrochemical cell(GALVANIC). The cathode is negative and the anode is positive in a electrolytic cell. Cations flow to the cathode and anions flow to the anode regardless of cell type.

yeah this is correct. galvanic cell is spontaneous (no batter), whereas electrolytic cell requires a battery. also remember oxidation occurs at the anode and reduction occurs at the cathode:

AN OX, RED CAT

 

[JBarr29]

yeah...im pretty confident with the answer i gave....another thing to add on top of what nitro said, galvanic cell is spontaneous, so it has a positive E zero, and the opposite for the electrolytic.

 

[1999TL]

Kaplan's neumonic is An Ox and a Red Cat.

In both cells, Oxidation occurs at the anode while reduction occurs at the cathode.

 

[1999TL]

yeah this is correct. galvanic cell is spontaneous (no batter), whereas electrolytic cell requires a battery. also remember oxidation occurs at the anode and reduction occurs at the cathode:

AN OX, RED CAT

Umm. That's what I get for pressing reply, then answering a phone call before pressing submit.

 

[joonkimdds]

The cathode is positive and the anode is negative in an electrochemical cell(GALVANIC). The cathode is negative and the anode is positive in a electrolytic cell. Cations flow to the cathode and anions flow to the anode regardless of cell type.

Does that mean
Cathod = negative pole
anothde = positive pole
in electrophoresis and cations flow to cathod, anions flow to anode?

 

[Maygyver]

Does that mean
Cathod = negative pole
anothde = positive pole
in electrophoresis and cations flow to cathod, anions flow to anode?

I think that's the opposite of what everyone has posted.