Question

What is produced at the cathode during the electrocytosis of a mixture of AgF and FeBr2

Answer 1

The cathode is an electrode used in reactions like these where the terminal is negative. And the anode is the opposite electrode in which the terminal is positive.

Now as you probably know, opposite charges attract. So the ion (charged atom) that is oppositely charged to the electrode will attract it.

The ions that are POSITIVE will be attracted to the cathode. So in this case, in the cathode:
AgF -----> Ag⁺ + F^-
Ag⁺ will go to cathode.

FeBr₂ -------> Fe²⁺ + 2Br^-
Fe²⁺ will go to the cathode.

Hope this helps