7th Edition L.35 question

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Max Kwon 1J
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Joined: Fri Sep 28, 2018 12:18 am
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7th Edition L.35 question

Postby Max Kwon 1J » Thu Oct 04, 2018 5:35 pm

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
Posts: 60
Joined: Fri Sep 28, 2018 12:23 am

Re: 7th Edition L.35 question

Postby Diana Bibireata 1B » Thu Oct 04, 2018 5:51 pm

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
Posts: 60
Joined: Fri Sep 28, 2018 12:19 am

Re: 7th Edition L.35 question

Postby Vanadium Wang 4H » Fri Oct 05, 2018 1:18 am

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
Posts: 62
Joined: Fri Sep 28, 2018 12:28 am

Re: 7th Edition L.35 question

Postby Nicole Elhosni 2I » Sun Oct 07, 2018 2:56 pm

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.


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