Question

How many molecules of carbon dioxide are produced when two molecules of butane undergo combustion?

• A. Five
• B. Six
• C. Seven
• D. Eight

Answer 1

The correct option is D Eight

The reaction in which hydrocarbons combine with oxygen $\left(O_2\right)$ to form carbon dioxide $\left(C{O}_2\right)$ and water $\left(H_{2}O\right)$ along with heat is called combustion.

The reaction below shows the combustion of butane $\left(C{H}_{3}C{H}_{2}C{H}_{2}C{H}_3\right)$.

$2{\text{CH}}_3{\text{CH}}_2{\text{CH}}_2{\text{CH}}_3+13{\text{O}}_2\to 8{\text{CO}}_2+10{\text{H}}_2\text{O}$

Eight molecules of $C{O}_2$ are produced when two molecules of butane undergo combustion.