Question

how many molecule of carbon dioxide are needed to react with excess iron oxide to produce 11.6 g of iron

Answer 1

0.16 moles of Carbon

Step-by-step explanation:

The balanced reaction equation:

`2Fe_(2)O_(3)` +
`3C` →
`4Fe` +
`3CO_(2)`↑

The mole ratio of Carbon to Iron is 3 : 4 (since Fe2O3 is in excess)

i.e 3 moles of C produces 4 moles of Fe.

If 1 mole of Fe - 55.8g of Fe

? moles - 11.6g of Fe

=
`(11.6)/(55.8)` = 0.208 moles

But 3 moles of C - 4 moles of Fe

? moles of C - 0.208 moles of Fe

=
`(3 *0.208)/(4)` = 0.16 moles of carbon.

I hope this explanation was clear and useful.