Post on 12-Oct-2020
Chemistry 11 Stoichiometry Review Worksheet Name:____KEY____
33.
KClO4 − > 2O2 + KClactual yield = 1.45g
theo yield = 5.95g KClO4 x1mol122.55 g
x 2O2
1KClO4
x 32.00 g1mol
= 3.11g O2
%Yield = 1.45g3.11g
x100% = 46.6%34.4FeCO3 + O2 − > 2Fe2O3 + 4CO2
percent purity = 62.8%
? g pure FeCO3 = 1.00x103g Fe2O3 x
1mol159.69 g
x 4 FeCO3
2 Fe2O3
x115.85 g1mol
= 1.45x103g FeCO3
% Purity = pureimpure
x100%
impure = pure%purity
x100% = 2.31x103g FeCO3
36. Theoretical yield: 56.9g Cu
Percentage Yield: 75.6%
37. 83.5%
38. 82.4%
39. 92.7%
40. 74.9%