HONORS CHEMISTRY
MORE STOICIOMETRY PRACTICE
NAME _______________________________
4-13-15
COMPLETE THE FOLLOWING ON YOUR OWN PAPER!
SHOW ALL WORK FOR CREDIT.
ALL EQUATIONS ARE UNBALANCED!!!
1. What is the LIMITING REAGENT when 75.0 grams of Calcium Chloride, CaCl2 react with 65.8 grams of Sodium
Phosphate, Na3PO4 to produce Calcium Phosphate, Ca3(PO4)2 ? Sodium Chloride, NaCl is another product formed
according to the reaction equation below?
CaCl2 +
Na3PO4 → Ca3(PO4)2 + NaCl
2. Octane, an organic compound added to gasoline to make engines run more smoothly, is formed when Carbon
Monoxide, CO reacts with Hydrogen, H2 to form Octane, C8H18 and Water, H2O. How many liters of Octane are
formed at STP when 675 grams of Carbon Monoxide react with an unlimited supply of Hydrogen.
The equation for the reaction is:
CO +
H2
→
C8H18
+
H2O
3. Before the advent of modern anesthesia, patients undergoing surgery were “put to sleep” by breathing an
organic compound known as Dimethyl Ether, which has the formula C2H6O .
One bad side effect of ether-based anesthesia was that once patients woke from sedation, they often suffered
from severe nausea and vomiting for several days. Newer and better discoveries helped to eliminate this
unpleasant side effect.
In order to get rid of Dimethyl Ether, the body had to decompose it through combustion with Oxygen, O2 to
break it down into Carbon Dioxide and Water, according to the equation:
C2H6O + 3 O2 → 2 CO2 + 3 H2O
A) If a patient were given 1.75 liters of Dimethyl Ether at STP during a 3 hour surgery, how many liters of
Carbon Dioxide would his/her body produce when breaking it down?
B) How many grams of water would be produced?