Question

What volume of carbon dioxide is produced when 25.3g propane (C3H8) is burned completely?

Answer 1

38.55L

Explanations:

Given the following parameters

Mass of propane = 25.3 grams

Determine the moles of propane

Moles of propane = Mass/molar mass

Moles of propane = 25.3/44.1

Moles of propane = 0.574moles

The combustion of propane is given according to the equation below:

`C_3H_8+5O_2\rightarrow3CO_2+4H_2O`

According to stoichiometry, 1mole of propane produces 3 moles of CO2, the moles of CO2 required will be:

`\begin{gathered} mole\text{ of CO}_2=3*0.574 \\ moles\text{ of CO}_2=1.721moles \end{gathered}`

Since 1 mole = 22.4L, volume of CO2 gas that will be produced is:

`\begin{gathered} volume\text{ of CO}_2=1.721*22.4 \\ volume\text{ of CO}_2=38.55L \end{gathered}`

Hence the volume of carbon dioxide produced is 38.55L