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A sample of solid albr3 contaminated with solid kf is melted and electrolyzed. what is the resulting overall reaction? correct! 2al3+(l) + 6br–(l) → 2al(s) + 3br2(l) no reaction will occur 2k+(l) + 2br–(l) → 2k(s) + br2(l) 2k+(l) + 2f–(l) → 2k(s) + f2(g) 2al3+(l) + 2f–(l) → 2al(s) + f2(g)

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meerkat18
If you look at the substances, you could test by interchanging the metals and nonmetals of each other. With that being said, K will combine with Br, and Al will combine with F. So, the complete reaction would be: 

AlBr₃ (l) + KF (l) → AlF₃ (l) + KBr (l)

They won't appear as ions because they are not in the aqueous state. Only strong electrolytes dissolved in water dissociate into ions.

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