Answer: 3
Explanation: 36 Given the balanced equation for the reaction between butane and oxygen: 2C4H10 + 13O2 --> 8CO2 + 10 H2O + Energy How many moles of carbon dioxide are produced when 5.0 moles of butane react completely? (1) 5.0 mol (2) 10. mol (3) 20. mol (4) 40. mol
Considering the reaction stoichiometry, the total number of moles of CO₂ produced when 5.0 moles of butane react completely is 20 moles.
The balanced reaction is:
2 C₄H₁₀ + 13 O₂ → 8 CO₂ + 10 H₂O
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
Then you can apply the following rule of three: if by stoichiometry 2 moles of C₄H₁₀ produce 8 moles of CO₂, 5 moles of C₄H₁₀ will produce how many moles of CO₂?
[tex]amount of moles of CO_{2}=\frac{5 moles of C_{4} H_{10} x8 moles of CO_{2} }{2 moles of C_{4} H_{10}}[/tex]
amount of moles of CO₂= 20 moles
Finally, the total number of moles of CO₂ produced when 5.0 moles of butane react completely is 20 moles.
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