Question

Propane, C3H8, a fuel used in many outdoor grills, burns in oxygen to produce carbon dioxide gas, CO2, and water vapor, H2O, as shown in the reaction below. If 2.0 mol of propane are burned (reacted with oxygen), how many moles of carbon dioxide will be produced?

Answer 1

6 moles of CO₂

Step-by-step explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

C₃H₈ + 5O₂ —> 3CO₂ + 4H₂O

From the balanced equation above,

1 mole of C₃H₈ reacted to produce 3 moles CO₂.

Finally, we shall determine the number of mole of CO₂ produced by the reaction of 2 moles of C₃H₈. This can be obtained as follow:

From the balanced equation above,

1 mole of C₃H₈ reacted to produce 3 moles CO₂.

Therefore, 2 moles of C₃H₈ will react to produce = 2 × 3 = 6 moles of CO₂.

Thus, 6 moles of CO₂ were obtained from the reaction.