1. Ideal Gas Equation PV=nRT Practice Problems

2. 2 AlCl3  2 Al + 3 Cl2 ↑
If 13 g of aluminum chloride react, what volume of chlorine gas will be collected at 25°C and 1.15 atm?
Plan of action:

3. 2 Na + H2SO4  Na2SO4 + H2 ↑
If 3.5 g of sodium react, what pressure of hydrogen gas will result in a 250 mL container at 35°C?
Plan of action:

4. F KBr  2 KF + Br2
If 1.0 L of fluorine gas measured at 22°C at 0.95 atm reacts, how many grams of potassium fluoride will be produced?
Plan of action:

5. 2 H2 + O2  2 H2O
If 3.5 L of oxygen gas measured at 42°C at 1.25 atm reacts, how many grams of water will be produced?
Plan of action:

6. 2 KNO3  2 KNO2 + O2 ↑
When 36 g of potassium nitrate decompose, what volume of oxygen gas is collected at 39°C and 2.3 atm pressure?
Plan of action:

7. 2 Ca + O2  2 CaO
In order to react 58 g of calcium, what pressure of oxygen gas at 42°C in a 6.0 L container is needed?
Plan of action:

8. 3 Ca + 2 H3PO4  Ca3(PO4)2 + 3 H2 ↑
If 9.5 g of calcium phosphate are produced, what volume of hydrogen gas at 77°C and 0.88 atm pressure is also produced?
Plan of action:

9. 2 H2 + O2  2 H2O Let’s try some excess-limiting:
When 4.7 L of hydrogen gas at 3.2 atm and 13°C are reacted with 3.6 L of oxygen gas at 2.9 atm and 12°C, what mass of water is produced?
Plan of action:
Use P,V,T
to find n
of H2 & O2
Use mole ratio to find Limiting Reactant
Use Limiting to find mass
of H2O  
HAVE
NEED
Limiting

10. N2 + 3 H2  2 NH3 ↑ Here is more excess-limiting:
When 2.2 L of nitrogen gas at 6.8 atm and 358°C are reacted with 9.6 L of hydrogen gas at 7.4 atm and 419°C, what mass of ammonia is produced?
Plan of action:
Use P,V,T
to find n
of N2 & H2
Use mole ratio to find Limiting Reactant
Use Limiting to find mass
of NH3  
HAVE
Limiting
NEED

11. C6H12O6 + 6O2  6CO2 + 6H2O And now, volume-volume:
When 8.0 L of oxygen gas at 0.98 atm and 25°C are reacted with sugar as shown, what volume of CO2 is produced at 37°C and 0.98 atm pressure?
Plan of action:

12. C3H8 + 5O2  3CO2 + 4H2O More volume-volume:
When 14 L of propane at 9.0 atm and 25°C are combusted with oxygen as shown, what volume of CO2 is produced at 40°C and 0.92 atm pressure?
Plan of action:

13. 2ZnS + 3O2  2SO2 ↑ + 2ZnO More, volume-volume:
When 15 L of oxygen gas at 2.6 atm and 55°C are reacted as shown, what volume of sulfur dioxide gas is produced at 65°C and 1.7 atm pressure?
Plan of action: