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1. You write "The Cathode is the positive electrode; the anode is the negative electrode." <-- that's only true in a galvanic cell / battery. In an electrolytic cell, the cathode is negative and the anode is positive. So.. A Galvanic (cell's) cathode is positive, a galvanic anode is negative.
The cathode is actually the reduction step, and the anode is the oxidation step. A useful mnemonic I learned from my chemistry professor is a red cat and an ox. Interestingly, cathodes in electrochemical cells are red and are positive. So I have found many uses for this along the way.
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.
The anode is the one that produces electrons and cathode receives electrons. This is true for both charge/discharge. When switching between charge/discharge, the redox reactions reverse, and the cathode/anode designations also switch to preserve cathode==reduction and anode==oxidation. During discharge, the battery functions as a galvanic cell ...
Cathode rays are originating from cathode as cathode is negatively charged. These rays then hit the gas sample inside the tube and ionize it. The electrons ejected from the ionisation of the gas travel towards anode. These rays are actually electrons produced from the ionisation of the gas inside the tube. Cite.
The cathode is a positive electrode in a galvanic cell. There are different notations for the sign (±) of the cathode used in the literature, which are determined, in particular, by the nature of the process. A very broad definition of a cathode is that it is the electrode of some device connected to the negative pole of the current source.
These electrons flow through the circuit from the anode to the cathode and are consumed in reductions on the other end. In an electrolytic cell, the battery creates an ‘electron pull’ from its positive pole. This pole is connected to the anode and therefore electrons are pulled away from the anode into the battery.
Cathode is the electrode where the Reduction reaction takes place. Anode is the electrode where the Oxidation reaction takes place. Voltaic cell is a synonym for a Galvanic cell. In the mentioned system (Zn, Cu in HXSOX), Cu can be charged both positively and negatively. It depends how you connect it to the power source.
The copper electrode is never the anode (in this cell). It is mislabeled if it is called an anode. The copper ions are reduced at the cathode. The cathode has a negative potential in relation to the anode. Here Cu plate is cathode and Zn plate is anode, it's written wrong in it. In the first case (Zn in ZnSOX4 Z n S O X 4 and Cu in CuSOX4 C u S ...
Thus, the zinc electrode becomes thinner as shown in your image. It is oxidizing into soluble ZnX2+ Z n X 2 + ions and thus its mass decreases. In the right solution, CuX2+ C u X 2 + ions are being reduced to metallic copper which deposits on the copper cathode. CuX2+ +2eX− Cu C u X 2 + + 2 e X − C u. The CuX2+ C u X 2 + ions are already ...