Chemistry – Stoichiometry Worksheet
1.
How many grams of calcium carbonate are required to prepare 50.0 g of calcium
oxide?
CaCO3  CaO + CO2
2.
When 0.50 g of magnesium reacts with silver nitrate, how many grams of silver are
prepared?
Mg + AgNO3 
3.
If 75.0 g of copper react with mercury II nitrate, how many grams of mercury form?
Cu + Hg(NO3)2  Cu(NO3)2 + Hg
4.
When 60.0 g of aluminum react with hydrochloric acid, how many grams of
hydrochloric acid react?
5.
How many grams of magnesium chloride are produced by treating 4.00 g of
titanium (III) chloride with magnesium?
6.
What mass of Na2SO4 is produced when sulfuric acid reacts with 200.0 g of sodium
chloride?
NaCl + H2SO4  HCl + Na2SO4
7.
In the electrolysis of 144 g of water, how many liters of oxygen are prepared?
8.
Calculate the number of liters of oxygen required to react with 75 g of aluminum.
9.
If 5.0 L of hydrogen are produced by the reaction of sodium and water, how many
grams of sodium reacted?
10. How many grams of sulfur are required in the preparation of 800.0 cubic decimeters
of sulfur dioxide?
S + O2  SO2
11. In the production of methanol, how many liters of hydrogen are required to react
with 335 L of carbon monoxide?
CO + H2  CH3OH
12. What volume of oxygen is needed to react with 340 L of hydrogen?
13. If 200.0 L of propane are burned, what volume of carbon dioxide is formed?
C3H8 + O2  CO2 + H2O
14. How many liters of oxygen are needed to react with sulfur to produce 5.00 * 103 L
of sulfur dioxide?
15. How many liters of chlorine gas are needed in the production of 200.0 L of bromine
gas from sodium bromide?
16. How many moles of HCl are needed to form 3.5 * 103 moles of Cl2?
HCl + O2  H2O + Cl2
17. How many grams of potassium are required to react with water to produce 90.0 L
of hydrogen?
18. In the reaction of 84 g of copper (II) oxide with hydrogen gas, how many liters of
hydrogen are required for the reaction to take place?
19. If 120 grams of mercuric oxide are decomposed, how many liters of oxygen are
released?
HgO  Hg + O2
20. How many grams of sodium hydroxide will react with 1.50 * 103 g of phosphoric
acid?
21. If 90.0 g of barium chloride react with sulfuric acid, how many grams of HCl are
produced?
BaCl2 + H2SO4  BaSO4 + HCl
22. If 320 grams of sodium carbonate react with calcium hydroxide, how many grams of
sodium hydroxide are formed?
23. What volume of oxygen is necessary to completely react with 125 L of methane gas,
CH4?
CH4 + O2  CO2 + H2O
24. How many grams of sodium peroxide must react with water to produce 35.0 L of
oxygen?
Na2O2 + H2O  NaOH + O2
25. In the Haber process for synthesizing ammonia, NH3, how many liters of ammonia
gas are produced when 400.0 L of nitrogen react with hydrogen?
26. How many cubic decimeters of hydrochloric acid gas are formed when 170 cubic
decimeters of hydrogen combine with chlorine?
27. How many grams of sodium carbonate are produced by the decomposition of 60.0 g
of sodium hydrogen carbonate?
28. If 10.0 g of aluminum sulfide are produced by the reaction of aluminum and sulfur,
how many grams of sulfur were needed?
29. If 2.5 g of copper II carbonate decomposed upon heating, how many grams of
copper II oxide formed?
30. If 22.4 dm3 of Cl2 gas reacts with sodium metal, calculate the mass of the product
that will form.