Name _________________________________ Hour_____
Stoichiometry Review (TEST FRIDAY!!)
**There are no limiting reactant problems on this review but there will be one on your test!**
Use the equation below to answer questions 1-3
P4 + 6Cl2  4PCl3
1. How many moles of P4 are needed to completely react with 4.3 mole of Cl2?
2. What is the mass of PCl3 produced when 0.45 moles of P4 react with excess Cl2?
3. How many grams of Cl2 were used up when 95 grams of PCl3 were produced?
4. Define the following:
a. Percent yield
b. Experimental yield
c. Theoretical yield
d. Limiting reactant
e. Excess reactant
5. For the following reaction: 2Na2O  4Na + O2 what is the theoretical yield of sodium (Na) when 26
grams of Na2O decomposes?
a. If in the lab, 21 grams of Na were actually produced, what is the percent yield?
6. For the following reaction: 2Ca + O2  2CaO, what is the theoretical yield of CaO when 0.52 moles of O2
react?
a. In the lab, 54 grams of CaO were produced. What is the percent yield?