Question

using the balanced equation 2 c8h18 + 25 o2 → 16 co2 + 18 h2o for the complete combustion of octane, identify the mole ratios that exist between octane and oxygen gas and between octane and carbon dioxide. ideally, the mole ratios should be expressed in lowest terms. select the correct answer, then press submit to find out how you did. question 2 of 2 identify the mole ratios that exist between octane and carbon dioxide. 0.1:8 0.8:1 0.16:2 0.25:16 some engines run on diesel fuel (c12h24), which provides some advantages and disadvantages. on a separate piece of paper, write a balanced equation for the complete combustion of diesel (diesel reacts with oxygen to produce carbon dioxide and water). check your

Explanation:

Step1: Identify coefficients in the equation

The balanced equation is $2C_{8}H_{18}+25O_{2}
ightarrow16CO_{2}+18H_{2}O$. The coefficient of octane ($C_{8}H_{18}$) is 2, the coefficient of oxygen ($O_{2}$) is 25, and the coefficient of carbon - dioxide ($CO_{2}$) is 16.

Step2: Calculate mole - ratios

• Mole - ratio of octane to oxygen: $\frac{n_{C_{8}H_{18}}}{n_{O_{2}}}=\frac{2}{25}$
• Mole - ratio of octane to carbon dioxide: $\frac{n_{C_{8}H_{18}}}{n_{CO_{2}}}=\frac{2}{16}=\frac{1}{8}$

Answer:

The mole - ratio of octane to oxygen is $2:25$ and the mole - ratio of octane to carbon dioxide is $1:8$.