Question

1. determine the volume of carbon dioxide produced by the combustion of 125 ml of propane, c₃h₈ (assume that the propane and carbon dioxide are at the same temperature and pressure). 41.7ml 750ml 125ml 375ml

Explanation:

Step1: Write the combustion equation

The combustion of propane ($C_3H_8$) is $C_3H_8 + 5O_2
ightarrow3CO_2+4H_2O$. At the same temperature and pressure, the volume - ratio of gases is equal to the mole - ratio according to Avogadro's law.

Step2: Determine the volume ratio

From the balanced chemical equation, the volume ratio of $C_3H_8$ to $CO_2$ is $V_{C_3H_8}:V_{CO_2}=1:3$.

Step3: Calculate the volume of $CO_2$

Given $V_{C_3H_8} = 125\ mL$. Using the volume ratio, $V_{CO_2}=3\times V_{C_3H_8}$. So $V_{CO_2}=3\times125\ mL = 375\ mL$.

Answer:

375 mL