Question

In electrolysis of molten Al2O3 with inert electrodes
At anode what formed

Answer 1

Answer on Question # 68745, Chemistry / General Chemistry

In electrolysis of molten $\mathrm{Al}_{2}\mathrm{O}_{3}$ with inert electrodes. At anode what formed?

Solution:

The reaction is:

$$2 \mathrm{Al}_{2} \mathrm{O}_{3} \xrightleftharpoons{in \text{ molted } \mathrm{Na}_{3}[\mathrm{AlF}_{6}]} 4 \mathrm{Al} \text{ (cathode)} + 3 \mathrm{O}_{2} \uparrow \text{ (anode)}$$

Answer: oxygen.

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