18th November 2019

wikipedia
11

What is an anode and a cathode?

For example, reversing the current direction in a Daniell galvanic cell converts it into an electrolytic cell where the copper electrode is the positive terminal and also the anode. In a diode, the cathode is the negative terminal at the pointed end of the arrow symbol, where current flows out of the device.

Similarly, it is asked, what happens in the anode?

Here is what happens during electrolysis: Positively charged ions migrate to the negative electrode (cathode) during electrolysis. They gain electrons and are reduced. Negatively charged ions migrate to the positive electrode (anode) during electrolysis.

What is an anode reaction?

The half-reaction on the anode, where oxidation occurs, is Zn(s) = Zn2+ (aq) + (2e-). The zinc loses two electrons to form Zn2+. The half-reaction on the cathode where reduction occurs is Cu2+ (aq) + 2e- = Cu(s). Here, the copper ions gain electrons and become solid copper.
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