Stoichiometry mixed practice

Last updated about 5 years ago

6 questions

Note from the author:

Mixed stoichiometry practice

Since everyone is doing a fabulous job on the homework.  I thought it would be fun to review balancing chemical equations.  For these problems, balance the equation first then do the stoichiometry as described in the question.

7:30PM - A student notified me that several answers in the key were incorrect.  Thank you.  I have updated the key and they are all correct now!  If you ever think you got it but the answer doesn't match - double check your work and then send me a message I'll double check.  Stick to your guns if you are confident in your knowledge!

1. Balance the following: N2 + H2 -> NH3

What volume of NH3 at STP is produced if 25.0 g of N2 is reacted with an excess of H2?

Balance the following: KClO3 -> KCl + O2

If 5.0 g of KClO3 is decomposed, what volume of O2 is produced at STP?

Balance the following: KClO3 -> KCl + O2

If 5.0 g of KClO3 is decomposed, how many grams of KCl are produced?

Balance the following: Zn + HCl -> ZnCl2 + H2

What volume of hydrogen at STP is produced when 2.5 g of zinc react with an excess of hydrochloric acid?

Balance the following: H2SO4 + NaOH -> H2O + Na2SO4

How many molecules of water are produced if 2.0 g of sodium sulfate are produced in the above reaction?

Stoichiometry mixed practice

1. Balance the following: N2 + H2 -> NH3What volume of NH3 at STP is produced if 25.0 g of N2 is reacted with an excess of H2?

Balance the following: KClO3 -> KCl + O2If 5.0 g of KClO3 is decomposed, what volume of O2 is produced at STP?

Balance the following: KClO3 -> KCl + O2If 5.0 g of KClO3 is decomposed, how many grams of KCl are produced?

Balance the following: Zn + HCl -> ZnCl2 + H2What volume of hydrogen at STP is produced when 2.5 g of zinc react with an excess of hydrochloric acid?

Balance the following: H2SO4 + NaOH -> H2O + Na2SO4How many molecules of water are produced if 2.0 g of sodium sulfate are produced in the above reaction?

Balance the following: AlCl3 -> Al + Cl2If 10.0 g of aluminum chloride are decomposed, how many molecules of Cl2 are produced?

1. Balance the following: N2 + H2 -> NH3

What volume of NH3 at STP is produced if 25.0 g of N2 is reacted with an excess of H2?

Balance the following: KClO3 -> KCl + O2

If 5.0 g of KClO3 is decomposed, what volume of O2 is produced at STP?

Balance the following: KClO3 -> KCl + O2

If 5.0 g of KClO3 is decomposed, how many grams of KCl are produced?

Balance the following: Zn + HCl -> ZnCl2 + H2

What volume of hydrogen at STP is produced when 2.5 g of zinc react with an excess of hydrochloric acid?

Balance the following: H2SO4 + NaOH -> H2O + Na2SO4

How many molecules of water are produced if 2.0 g of sodium sulfate are produced in the above reaction?

Balance the following: AlCl3 -> Al + Cl2

If 10.0 g of aluminum chloride are decomposed, how many molecules of Cl2 are produced?