Question

The number of molecules of carbon dioxide produced when two molecules of butane undergo combustion is ____________.

• 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 and light is called combustion.

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

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

The number of molecules of $C{O}_2$ produced when two molecules of butane undergoes a combustion reaction is eight.