Question

Which of the following is a valid mole ratio from the balanced equation 2Fe2O3 + 3C → 4Fe + 3CO2?

two moles of F e two O three over four moles of F e
four moles of C over three moles of F e
two moles of F e two O three over four moles of C
three moles of C over four moles of C O two

Answer 1

A valid mole ratio from the given balanced equation 2Fe2O3 + 3C → 4Fe + 3CO2 could be two moles of Fe2O3 to four moles of Fe or three moles of C to four moles of Fe.

Step-by-step explanation:

To find a valid mole ratio from the balanced chemical equation 2Fe2O3 + 3C → 4Fe + 3CO2, we must compare the coefficients of the substances involved in the equation. These coefficients directly represent the mole ratios between the substances. Here are the correct mole ratios derived from the balanced equation:

• Two moles of Fe2O3 is to four moles of Fe (2Fe2O3:4Fe)
• Three moles of C is to four moles of Fe (3C:4Fe)
• Four moles of C is not correct because carbon's coefficient is three.
• Three moles of C is to three moles of CO2 (3C:3CO2) which simplifies to 1:1

Thus, a valid mole ratio from the given equation would be two moles of Fe2O3 over four moles of Fe or three moles of C over four moles of Fe.

Answer 2

2 moles of Ferric Oxide (
`Fe_(2)O_(3)`) over 4 moles of Fe

Step-by-step explanation:

Firts of all I want to explain the nomenclature that is involve in the equation:

`Fe_(2)O_(3)=` Ferric Oxide

`C=` Carbon

`Fe=` Iron

`CO_(2)=` Carbon Dioxide

Now, to understand the ratio from the balanced equation its necessary read the equation with the respective coefficients, for example:

• 2 moles of Ferric Oxide (
  `Fe_(2)O_(3)`) reacts to produce 4 moles of Iron (
  `Fe=`)
• 3 moles of Carbon (
  `C`) reacts to produce 4 moles of Iron (
  `Fe=`)
• 2 moles of Ferric Oxide (
  `Fe_(2)O_(3)=`) reacts to produce 3 moles of Carbon Dioxide (
  `CO_(2)`)

Each of the above could be represent as a ratio, but is always necessary keep the respective coefficient, then if you read each option only the first has the respective coefficient, it means:

2 moles of Ferric Oxide (
`2Fe_(2)O_(3)`) reacts to produce 4 moles of Iron (
`4Fe=`) or, in other words, 2 moles of Ferric Oxide (
`2Fe_(2)O_(3)`) over 4 moles of Iron 4 (
`4Fe=`)

Regards!