What substance is produced at the anode during the electrolysis of molten calcium bromide, cabr2? assume standard conditions?

Answer is: bromine.

Molten calcium bromide is separeted::

CaBr ₂ (l) → Ca (l) + Br₂ (l),

but first ionic bonds in this salt are separeted because of the heat:

CaBr ₂ (l) → Ca²⁺ (l) + 2Br⁻ (l).

Reaction of reduction at cathode (-) : Ca²⁺ (l) + 2e⁻ → Ca (l).

Reaction of oxidation at anode (+) : 2Br⁻ (l) → Br₂ (l) + 2e⁻.

The anode is positive and the cathode is negative.