E-85 is an alternative fuel for automobiles and light trucks that consists of 85.0% (by volume) ethanol (C2H5OH), and 15.0% gasoline. When ethanol burns completely it produces CO2 and H2O. The balanced equation for the burning of ethanol is C2H5OH + 3O2 ? 2CO2 + 3H2O The density of ethanol is 0.790 g/mL. How many moles of carbon dioxide are produced by the complete combustion of the quantity of ethanol in 5.00 gallons of E-85 fuel? mol CO2
Added by Jennifer J.
Close
Step 1
Given that E-85 fuel consists of 85.0% ethanol by volume, we first need to calculate the volume of ethanol in 5.00 gallons of E-85. \[ \text{Volume of ethanol} = 5.00 \, \text{gallons} \times 0.85 = 4.25 \, \text{gallons} \] Show more…
Show all steps
Your feedback will help us improve your experience
Keerti J and 86 other Chemistry 101 educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
E-85 is an alternative fuel for automobiles and light trucks that consists of $85 \%$ (by volume) ethanol, $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH}$ and $15 \%$ gasoline. The density of ethanol is $0.79 \mathrm{g} / \mathrm{mL}$ How many moles of ethanol are in a gallon of $\mathrm{E}-85 ?$
Gasohol is a fuel that contains ethanol (C2H6O) that burns in oxygen (O2) to give carbon dioxide and water. C2H6O(g) + 3O2(g) ⟶ 2CO2(g) + 3H2O(g) a) How many moles of O2 are needed to completely react with 4.0 moles of C2H6O? b) If a car produces 54 g of CO2, how many grams of O2 are used up in the reaction? c) How many grams of CO2 are produced if 50.0 g of C2H6O are mixed with 74.5 g of O2?
Rahi P.
For ethanol, $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH},$ which is mixed with gasoline to make the fuel gasohol, $\Delta H_{f}^{\circ}=-277.63 \mathrm{~kJ} / \mathrm{mol} .$ Calculate the number of kilojoules released when 1.25 gallons of ethanol is burned completely. The density of ethanol is $0.787 \mathrm{~g} \mathrm{~cm}^{-3}$. Use the data in Table 6.2 to help in the computation.
Recommended Textbooks
Chemistry: Structure and Properties
Chemistry The Central Science
Chemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD