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- Which is anode and which is cathode? - Chemistry Stack Exchange
The actual question is, if the cathode indeed is the negative electrode? So the question is still: Why would electrons move towards the cathode, which is negative? I have added an extra diagram of simple electrolysis to explain this point a bit clearer - (negative) anions move towards the (positive) anode in order to deliver the excess electron
- Positive or Negative Anode Cathode in Electrolytic Galvanic Cell
65 In a galvanic (voltaic) cell, the anode is considered negative and the cathode is considered positive This seems reasonable as the anode is the source of electrons and cathode is where the electrons flow However, in an electrolytic cell, the anode is taken to be positive while the cathode is now negative
- Half cells: difference between E (cell) = E (cathode}-E (anode) E . . .
2 When do I use each of the above? If I use one or the other they give me difference results For example, I'm trying to put the Volts into an equation to find standard free energy change $$\Delta G^\circ= -nFE$$ If I use the cathode minus anode I get a different answer to the oxide + reduct
- Direction of flow of current in electrolytic cell [duplicate]
In an electrolytic cell, does current flow from Anode to Cathode or Cathode to Anode I've seen various websites, including this and this, but they seem to contradict each other
- Why is the anode in a galvanic cell negative, rather than positive . . .
Similarly in diagrams comparing galvanic and electrolytic cells, electrons move away from the anode to the cathode in the electrolytic cell, making the anode positive This makes perfect sense according to my first reasoning However, in a galvanic cell, even though electrons still move from the anode to the cathode, it is defined as negative
- electrolysis - Is a pure copper cathode necessary in the electrolytic . . .
The cathode (a thin copper sheet) is simply left in the final product of the refinery (a thick copper plate) - no one needs them separated, they are the same substance The new cathode sheets are made by recycling a small amount of the refinery's own production (onsite) and they are exactly as much pure
- Cathode + Anode + Rechargeable battery - Chemistry Stack Exchange
The cathode is a metal oxide and the anode consists of porous carbon During discharge, the ions flow from the anode to the cathode through the electrolyte and separator; charge reverses the direction and the ions flow from the cathode to the anode
- Why do they use graphite electrodes in the Hall–Héroult process?
During the electrolysis process, aluminium is deposited at the cathode and oxygen is liberated at the anode Some of this oxygen reacts with the carbon in the graphite to form carbon-dioxide, thus slowly burning away the anodes Thus, the anodes have to replaced periodically But if this is the case, why do they use graphite anodes at all?
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