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%