### Typo on L.35

Posted:

**Tue Oct 01, 2019 8:36 pm**Hey everyone!

Homework problem L.35 states, "Sodium bromide, NaBr, which is used to produce AgBr for use in photographic film, can itself be prepared as follows:

Fe + Br2 --> FeBr2

FeBr2 + Br2 --> Fe3Br8

FeBr2 + Na2CO3 --> NaBr + CO2 + Fe3O4

What mass of iron, in kilograms, is needed to produce 2.50 t of NaBr? Note that these equations must first be balanced!"

I noticed a typo here when I was trying to balance the equations. FeBr2 should read Fe3Br2. I hope this is useful for anyone else that encounters this problem!

Homework problem L.35 states, "Sodium bromide, NaBr, which is used to produce AgBr for use in photographic film, can itself be prepared as follows:

Fe + Br2 --> FeBr2

FeBr2 + Br2 --> Fe3Br8

FeBr2 + Na2CO3 --> NaBr + CO2 + Fe3O4

What mass of iron, in kilograms, is needed to produce 2.50 t of NaBr? Note that these equations must first be balanced!"

I noticed a typo here when I was trying to balance the equations. FeBr2 should read Fe3Br2. I hope this is useful for anyone else that encounters this problem!