Stoichiometry: Octane and Oxygen
by: angela edens
Stoichiometry
Stoichiometry means the relationship between the relative quantities of substances taking part in a reaction or forming a compound, typically a ratio of whole integers and translates to "measurement of elements".
Octane and Oxygen in Real Life
An example of a real world use of the reaction of octane and oxygen would be the burning of gasoline. Gasoline is mostly made of octane, so a reaction of octane and oxygen would burn it, producing carbon dioxide and water.
Type of Reaction: Combustion
balanced, named, and measured
2C8H18(L) + 25O2(g) = 16CO2(g) + 18H2O(L)
Octane- C8H18 114.23g/mol
Oxygen- O2 32g/mol
Carbon Dioxide- CO2 44.01g/mol
Water- H2O 18g/mol
mole to mole conversions
octane and water
114.23g/mol = 6.35mol
18g/mol
Mass to mass conversions
12.1g x 18g/mol = 1.91g
114.23g/mol
limiting and excess reactant
Octane 12.1g
Oxygen 20.15g
Octane is the limiting reactant and Oxygen is the excess reactant.
Theoretical Yield: 324grams
percent yield
6.5g x 100 = 36.1%
18g