- #1
priscilla89
- 18
- 0
Homework Statement
If the reaction of 2.5 g of Al with 2.5 g of O2 produced 3.5 g of Al2O3, what is the percent yield of Al2)3? Be sure to write and balance equation.
Homework Equations
Percent Yield = (actual yield / theoretical yield ) x 100
The Attempt at a Solution
4Al + 302 ---> 2Al2O3
2.5 g Al x (1 mol Al / 108 g) x (2 mol Al2O3 / 4 mol Al) = .0115 mol Al2O3
.0115 mol Al2O3 (204 g Al2O3 / 1 mol Al2O3) = 2.36 Al2O3
Percent Yield = (2.36 / 3.50) X 100 = 67 %