The combustion reaction of propane is described by the reaction.

Question

The combustion reaction of propane is described by the reaction.

C3H8 + 5O2 → 4H2O + 3CO2.
How many moles of O2 are required to generate 3 moles of CO2?

2.5 moles

3 moles

4 moles

5 moles

Answer 1

To determine the number of moles of O2 required to generate 3 moles of CO2, we can refer to the balanced chemical equation for the combustion reaction of propane:

C3H8 + 5O2 → 4H2O + 3CO2

According to the balanced equation, it states that 5 moles of O2 are required to produce 3 moles of CO2.

Therefore, the correct answer is 5 moles.

Answer 2

The combustion reaction of propane is described by the reaction.

3 moles

To determine the number of moles of O2 required to generate 3 moles of CO2, we can refer to the balanced chemical equation for the combustion reaction of propane:

3 mols CO2 x (5 mols O2/3 mols CO2) = 3 x (5/3) = ?

3 moles