Name: ___Bruno Rodrigues zAmbolini______________________ Date: ___1/7/2021_____
Per: __3___
Gas and Solution Stoichiometry
Please answer the following using proper units and showing all work. Please note that these
problems require a balanced chemical equation.
1. Solid iron reacts with sulfuric acid (H2SO4) to produce iron (II) sulfate and hydrogen
gas. If 650 mL of hydrogen gas are collected at STP, how many grams of iron (II) sulfate
are also produced?
M = 0.058g
Fe(s) + H2SO4 (qq) -> FeSO4(s) + H2 (g)
x = 4.4g
2. Some sulfuric acid is spilled on a lab bench. You can neutralize the acid by sprinkling
sodium bicarbonate on it and then mopping up the resulting solution. Sodium bicarbonate
is added until the fizzing due to the formation of CO2 (g) stops. If 27mL of 6.0M H2SO4
was spilled, what is the minimum mass of NaHCO3 that must be added to the spill to
neutralize the acid?
m(NaHCO3) = n(NaHCO3) X M(NaHCO3), M(NaHCO3) = 84.007 g/mol
m(NaHCO3) = 0.176mol X 84.007 g/mol = 17.79g
3. Assume that 13.5 grams of solid aluminum react with HCl at STP:
a. How many moles of Al react?
0.250 moles
b. How many moles of H2 are produced?
0.250 moles
c. How many liters of H2 are produced?
16.8 L of H2
4. Acetylene gas (C2H2) undergoes combustion to produce carbon dioxide and water vapor.
a. How many liters of C2H2 are required to produce 75.0 L of CO2?
75.0L CO2 X (1mol CO2)/(22.4L CO2) X (2mol C2 H2)/(4mol CO2) X (22.4L C2
H2)/(1mol C2 H2) = 37.50C2 H2
b. What volume of H2O is produced?
75.0L CO2 X (1mol CO2)/(22.4L) X (2mol H2O)/(4mol CO2) X (22.4 H2O)/(1mol H2O)
= 37.50C2 LHL
c. What volume of O2 is required?
75.0L CO2 X (1mol CO2)/(22.4L CO2) X (5mol O2)/(4mol CO2 H2) X (22.4LOL/(1mol
LOL) = 93.75 LOL