Chemistry

How many grams of water will be produced in the complete combustion of 20.0g of Octane, C8H18(g) and 50.0g Oxygen gas?

asked by Jefferson
  1. Combustion reactions always follow this general reaction:

    CxHy + O2 -----> CO2 + H2O

    Plug in Octane into the the reaction and then balance:

    C8H18 + O2 -----> CO2 + H2O

    2 C8H18 + 25 O2 -----> 16 CO2 + 18 H2O

    Just eyeballing it, octane is the limiting reagent.

    ****To determine the limiting reagent, you have to find the number of moles that each reactant can produce (i.e., which reactant will you run out of first.)

    20.0g *(1 mole/114.23 g)= moles of C8H18

    moles of C8H18*(18 mol of H2O/2 moles of C8H18)= moles of H2O

    moles of H2O*(18.00g/mole)= mass of H2O

    posted by Devron
  2. 28.36

    posted by Carmen

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    #5 Limiting Reactants How many grams of water will be produced in the complete combustion of 20.0 grams of Octane, C8H18(g) and 50.0 grams Oxygen gas?
  2. Chemistry

    How many grams of water will be produced by the complete combustion of 10.00 g of octane (C8H18)? Mass of water = g H2O
  3. chem

    The complete combustion of octane, C8H18, the main component of gasoline, proceeds as follows. 2 C8H18(l) + 25 O2(g) ¨ 16 CO2(g) + 18 H2O(g) Octane has a density of 0.692 g/mL at 20‹C. How many grams of O2 are required to
  4. chemistry

    A major component of gasoline is octane C8H18. When octane is burned in air, it chemically reacts with oxygen gas O2 to produce carbon dioxide CO2 and water H2O. What mass of octane is consumed by the reaction of 8.8g of oxygen
  5. chemistry

    What mass of CO2, a greenhouse gas, is produced per liter of each fuel (assuming complete combustion) I got this data density of ethanol = 0.785 g/mL density of octane = 0.699 g/mL Ethanol) C2 H5 OH + 2O2 -> 2CO2 + 3H2O delta H
  6. Chemistry

    What volume of liquid water is produced from the combustion of 10.00 L of octane, C8H18? (density of octane=0.692 g/mL
  7. chemistry

    A major component of gasoline is octane (C8H18). When octane is burned in air it chemically reacts with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O). What mass of oxygen gas is consumed by the reaction of 8.17g of
  8. Chemistry

    What volume of oxygen gas at STP would be needed for the complete combustion of 39.0 grams of octane ?
  9. chemistry

    During the combustion of 5.00g of octane C8H18, 239.5 kcal is released. Write a balanced equation for the combustion reaction. Are reactants or products favored? What is the sign of change of heat for this reaction? how much
  10. Chemistry Octane Combustion

    Write the balanced equation for the combustion of octane (C8H18). Assuming that gasoline is 100% octane, with a density of 0.692 g/mL, what mass of CO2 is produced by combustion of 1.7 1010 gal of gasoline? Need help on how to get

More Similar Questions