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Stoichiometry – Mixed Problems, Lecture notes of Stoichiometry

International University Institute of Luxembourg (IUIL)Stoichiometry

Stoichiometry – Mixed Problems. 1. N2 + 3H2 → 2NH3. What volume of NH3 at STP is produced if 25.0g of N2 is reacted with an excess of H2?

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2021/2022

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Name: ____________________
Stoichiometry – Mixed Problems
1. N2 + 3H2 → 2NH3
What volume of NH3 at STP is produced if 25.0g of N2 is reacted with an excess of H2?
2. 2KClO3 → 2KCl + 3O2
If 5.0 g of KClO3 is decomposed, what volume of O2 is produced?
3. How many grams of KCl are produced in Problem 2?
4. Zn + 2 HCl → ZnCl2 + H2
What volume of hydrogen at STP is produced when 2.5 g of zinc react with an excess of
hydrochloric acid?
5. H2SO4 + 2 NaOH → H2O + Na2SO4
How many molecules of water are produced if 2.0g of sodium sulfate are produced in the
above reaction?
6. 2AlCl3 → 3 Al + 3Cl2
If 10.0g of aluminum chloride are decomposed, how many molecules of Cl2 are produced?
Chemistry IF8766 Page 65 Instructional Fair, Inc.

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Name: ____________________

Stoichiometry – Mixed Problems

1. N 2 + 3H 2 → 2NH 3

What volume of NH 3 at STP is produced if 25.0g of N 2 is reacted with an excess of H 2?

  1. 2KClO 3 → 2KCl + 3O 2 If 5.0 g of KClO 3 is decomposed, what volume of O 2 is produced?
  2. How many grams of KCl are produced in Problem 2?
  3. Zn + 2 HCl → ZnCl 2 + H 2 What volume of hydrogen at STP is produced when 2.5 g of zinc react with an excess of hydrochloric acid?
  4. H 2 SO 4 + 2 NaOH → H 2 O + Na 2 SO 4 How many molecules of water are produced if 2.0g of sodium sulfate are produced in the above reaction?
  5. 2AlCl 3 → 3 Al + 3Cl 2 If 10.0g of aluminum chloride are decomposed, how many molecules of Cl 2 are produced? Chemistry IF8766 Page 65 Instructional Fair, Inc.