Honors Chemistry – Gas Stoichiometry Problems – Chp 11 assignment #4
1) The industrial production of ammonia proceeds according to the following equation.
N2(g) + 3H2(g)  2NH3(g)
a. What volume of nitrogen at STP is needed to react with 57.0 mL of hydrogen
measured at STP?
b. What volume of NH3 at STP can be produced from the complete reaction of 6.39  104
L of hydrogen?
c. If 20.0 mol of nitrogen is available, what volume of NH3 at STP can be produced?
2) One method used in the eighteenth century to generate hydrogen was to pass steam
through red-hot steel tubes. The following reaction takes place.
3Fe(s) + 4H2O(g)  Fe3O4(s) + 4H2(g)
a. What volume of hydrogen at STP can be produced by the reaction of 6.28 g of iron?
b. What mass of iron will react with 500. L of steam at STP?
c. What volume of water vapor would be used to produce 80ml of hydrogen gas, if both
gases are at 1.4atm of pressure and 310K?
3) Diethyl ether burns in air according to the following equation.
C4H10O(l) + 6O2(g)  4CO2(g) + 5H2O(l)
a. If 7.15 L of CO2 is produced at STP what volume of oxygen, measured at STP, was
consumed?
b. What mass of diethyl ether was burned if 7.15L of CO2 was produced at STP?
c. How many moles of diethyl ether were used if 450ml of oxygen gas was consumed at
STP?
4) When nitroglycerin detonates, it produces large volumes of hot gases almost instantly
according to the following equation.
4C3H5N3O9(l)  6N2(g) + 12CO2(g) + 10H2O(g) + O2(g)
a. When 0.100 mol of nitroglycerin explodes, what volume of each gas measured at STP
is produced?
b. What mass of nitrogen gas is used when 10.0 g of nitroglycerin explodes?
c. What mass of water vapor is produced when 12L of nitrogen gas at STP reacts with
excess nitroglycerin?