Honors Chemistry Practice Worksheet – Stoichiometry



Honors Chemistry Practice Worksheet – Stoichiometry

1. How many moles of oxygen are consumed when 96.7 moles of hydrogen sulfide gas are burned, producing sulfur dioxide and water vapor in the process?

2. If 3.70 x 1023 molecules of oxygen react with excess benzene (C6H6), how many grams of water can be produced?

3. How many grams of potassium chloride are produced by the decomposition of 4.90 grams of potassium chlorate?

4. How many grams of aluminum oxide are produced when 17.9 moles of oxygen react with excess aluminum?

5. How many moles of aluminum oxide are formed when a mixture of 0.360 moles of aluminum and 0.360 moles of oxygen are ignited?

6. What mass of sulfur trioxide will be produced when 25.0 grams of sulfur dioxide react with 6.00 grams of oxygen?

7. What reactant will be in excess, and by how much, when 145.5 grams of sodium oxide reacts with 2.93 moles of carbon dioxide?

8. When 10.0 grams of silicon react with 100.0 grams of oxygen, how many grams of silicon dioxide is formed? Which reactant is in excess and by how much?

9. 30.0 grams of acetic acid reacts with excess methanol (CH3OH) to produce 30.0 grams of methyl acetate (CH3COOCH3) and water. Determine the percent yield of the reaction.

10. How many grams of zinc chloride solution are required to completely react with 15.0 grams of lithium? The zinc chloride solution is 8.00% zinc chloride by mass.

11. A 30.0% calcium chloride solution has a mass of 50.0 grams. This solution reacts with 35.0 grams of silver nitrate. Determine the excess reactant and the grams of it that remains, the moles of precipitate that form, and the grams of the other product formed.

12. How much sodium hydroxide can be neutralized by the hydrochloric acid that remains after 38.75 grams of aluminum react with 325.0 grams of hydrochloric acid?

13. A chemist reacts 2.00 grams of vanadium II oxide with 5.75 grams of iron III oxide to produce vanadium V oxide and iron II oxide. The reaction goes to 67.0% completion. How many grams of the iron II oxide are produced?

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