7th Edition L.35 question

[Max Kwon 1J]

I have a question on L.35 because the question and the answer in the solutions manual seem to be different. I tried balancing the equation FeBr2 + Na2CO3 -> NaBr + CO2 + Fe3O4, but it seemed difficult so I checked the solutions manual. However, the answer key has it balanced as Fe3Br8 + 4 Na2CO3 -> 8 NaBr + 4 CO2 +Fe3O4. The main issue is that the FeBr2 changes to a Fe3Br8, which I am confused with. If anyone can help, it would be appreciated! Thanks :))

[Diana Bibireata 1B]

I noticed that too and I believe the answer key is correct and the reactant should be Fe₃Br₈. This would make sense because the product from the second reaction should be one of the reactants in the 3rd reaction.

[Vanadium Wang 4H]

I believe you were looking at the second line when trying to copy the third line to balance. The textbook does say that the equation needed to be balanced is Fe3Br8 + Na2CO3 -> NaBr + CO2 + Fe3O4

[Nicole Elhosni 2I]

I got stuck on that problem as well! I searched online because I had been trying to balance the equation for some time, and when I searched it, it said that the equation they asked us to balance was not possible.