Question

For each molecule of C₄H₈ that reacts, how many molecules of carbon dioxide and water are produced?

1) two carbon dioxide molecules and two water molecules
2) four carbon dioxide molecules and four water molecules
3) two carbon dioxide molecules and four water molecules
4) four carbon dioxide molecules and two water molecules

Answer 1

For each molecule of C4H8 that reacts in combustion, four molecules of carbon dioxide and five molecules of water are produced according to the balanced chemical equation.

Step-by-step explanation:

In the combustion reaction of C4H8, each molecule of butane reacts with oxygen to produce carbon dioxide and water. The balanced chemical equation for this reaction is:

2 C4H8 + 13 O2 → 8 CO2 + 10 H2O

From this equation, we see that for every two molecules of C4H8 that react, eight molecules of carbon dioxide and ten molecules of water are produced. Therefore, for each molecule of C4H8, four molecules of CO2 and five molecules of H2O are produced.