Name ____________________________
Chemistry Quiz #2 – Problems involving volume and Percent Yield
PSYW and BYFA
1. Use the following balanced chemical equation below to answer the questions:
(density of oxygen is .0043 g/mL)
2KClO3  2KCl + 3O2
a. How many grams of KClO3 must react to form 42.0 mL of O2?
b. What volume of oxygen can be made from 0.005 mol of KClO3?
2. Determine the limiting reactant, the theoretical yield, and the percent yield if 14.0 grams of N2
are mixed with 9.0 grams of H2. 16.1 grams of NH3 are collected when the lab is performed.
N2 + 3H2  2NH3
Limiting reactant =
Theoretical Yield =
% Yield =