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Balancing Equations Test Questions

Chemistry Test Questions

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Balancing chemical equations is a basic skill in chemistry. Chemical reactions have the same number of atoms before the reaction as after the reaction. This collection of ten chemistry test questions deals with balancing chemical reactions.

Question 1

Balancing equations is an essential chemistry skill.
Adrianna Williams, Getty Images
Balance the following equation:

__ SnO2 + __ H2 → __ Sn + __ H2O

Question 2

Balance the following equation:

__ KOH + __ H3PO4 → __ K3PO4 + __ H2O

Question 3

Balance the following equation:

__ KNO3 + __ H2CO3 → __ K2CO3 + __ HNO3

Question 4

Balance the following equation:

__ Na3PO4 + __ HCl → __ NaCl + __ H3PO4

Question 5

Balance the following equation:

__ TiCl4 + __ H2O → __ TiO2 + __ HCl

Question 6

Balance the following equation:

__ C2H6O + __ O2 → __ CO2 + __ H2O

Question 7

Balance the following equation:

__ Fe + __ HC2H3O2 → __ Fe(C2H3O2)3 + __ H2

Question 8

Balance the following equation:

__ NH3 + __ O2 → __ NO + __ H2O

Question 9

Balance the following equation:

__ B2Br6 + __ HNO3 → __ B(NO3)3 + __ HBr

Question 10

Balance the following equation:

__ NH4OH + __ Kal(SO4)2·12H2O → __ Al(OH)3 + __ (NH4)2SO4 + __ KOH + __ H2O

Answers

1. 1 SnO2 + 2 H2 → 1 Sn + 2 H2O
2. 3 KOH + 1 H3PO4 → 1 K3PO4 + 3 H2O
3. 2 KNO3 + 1 H2CO3 → 1 K2CO3 + 2 HNO3
4. 1 Na3PO4 + 3 HCl → 3 NaCl + 1 H3PO4
5. 1 TiCl4 + 2 H2O + 1 TiO2 + 4 HCl
6. 1 C2H6O + 3 O2 → 2 CO2 + 3 H2O
7. 2 Fe + 6 HC2H3O2 → 2 Fe(C2H3O2)3 + 3 H2
8. 4 NH3 + 5 O2 → 4 NO + 6 H2O
9. 1 B2Br6 + 6 HNO3 → 2 B(NO3)3 + 6 HBr
10. 4 NH4OH + 1 Kal(SO4)2·12H2O → 1 Al(OH)3 + 2 (NH4)2SO4 + 1 KOH + 12 H2O

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