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A level Chem question

Could anyone please confirm my answer or if it’s wrong show me how to get the right answer, thanks :smile:

)
What mass of iron is formed when 240g of iron III oxide reacts with carbon monoxide?
Fe2O3 + 3CO -> 2Fe + 3CO2

I got 336g of Fe

i got 167.8

Original post by Timo werner

i got 167.8

How did you get to that answer?

Reply 3

Timo werner

Original post by Porkypig800

How did you get to that answer?

work out moles of iron oxide,multiply by 2 and then by mr of iron

Reply 4

Porkypig800

I did that too:
240/160 to get 1.5, multiplied by 2 to get 3 then 112 x 3 equals 336

Reply 5

Pigster

Original post by Porkypig800

Could anyone please confirm my answer or if it’s wrong show me how to get the right answer, thanks :smile:

)
What mass of iron is formed when 240g of iron III oxide reacts with carbon monoxide?
Fe2O3 + 3CO -> 2Fe + 3CO2

I got 336g of Fe

If you had stopped for a moment and thought about it.

If you start with 240 g of Fe2O3 are you really likely to end up with 336 g of Fe? Given that the Fe you're making has a higher mass than the Fe2O3 you started with.

Alarm bells should have rung and you should have, for yourself, tried to recognise where you went wrong.