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Balancing Chemical Equations Worksheet Answers. Check these answers against the work you did on the six problems. Notes on the problems. #’s 1, 2 & 4 are very similar to the problems we did in class. #3 should look very familiar and you should make yourself familiar with it (hint, hint)

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balancing chemical equations worksheet answers

Balancing Chemical Equations Worksheet Answers

Check these answers against the work you did on the six problems

notes on the problems
Notes on the problems
  • #’s 1, 2 & 4 are very similar to the problems we did in class.
  • #3 should look very familiar and you should make yourself familiar with it (hint, hint)
  • #5 is easy-peasy
  • #6 will stretch your ability. Begin with the big compound on the reactants side – 7 and 1 just won’t work…think one step up
1 h 2 o 2 h 2 o
1. H2 + O2 H2O

Reactants Products

H 2 H 2

O 2 O 1

H2 + O2 H2O

H2 + O2 2H2O

2H2 + O2 2H2O

Reactants Products

H 2 H 4

O 2 O 2

Reactants Products

H 4 H 4

O 2 O 2

2 hgo hg o 2
2. HgO  Hg + O2

Reactants Products

Hg 1 Hg 1

O 1 O 2

HgO  Hg + O2

2HgO  Hg + O2

2HgO  2Hg + O2

Reactants Products

Hg 2 Hg 1

O 2 O 2

Reactants Products

Hg 2 Hg 2

O 2 O 2

3 co 2 h 2 o c 6 h 12 o 6 o 2
3. CO2 + H2O  C6H12O6 + O2

Reactants Products

C 1 C 6

H 2 H 12

O 3 O 8

CO2 + H2O  C6H12O6 + O2

CO2 + 6H2O  C6H12O6 + O2

6CO2 + 6H2O  C6H12O6 + O2

6CO2 + 6H2O  C6H12O6 + 6O2

Reactants Products

C 1 C 6

H 12 H 12

O 8 O 8

Reactants Products

C 6 C 6

H 12 H 12

O 18 O 8

Reactants Products

C 6 C 6

H 12 H 12

O 18 O 18

4 na h 2 o naoh h 2
4. Na + H2O  NaOH + H2

Reactants Products

Na 1 Na 1

H 2 H 3

O 1 O 1

Na + H2O  NaOH + H2

Na + 2H2O  NaOH + H2

Na + 2H2O  2NaOH + H2

2Na + 2H2O  2NaOH + H2

Reactants Products

Na 1 Na 1

H 4 H 3

O 2 O 1

Reactants Products

Na 1 Na 2

H 4 H 4

O 2 O 2

Reactants Products

Na 2 Na 2

H 4 H 4

O 2 O 2

5 h 3 po 4 h 4 p 2 o 7 h 2 o
5. H3PO4 H4P2O7 + H2O

Reactants Products

H 3 H 6

P 1 P 2

O 4 O 8

H3PO4 H4P2O7 + H2O

2H3PO4 H4P2O7 + H2O

Reactants Products

H 6 H 6

P 2 P 2

O 8 O 8

6 c 7 h 6 o 2 co 2 h 2 o

Reactants Products

C 7 C 1

H 6 H 2

O 4 O 3

6. C7H6O2 CO2 + H2O

Reactants Products

C 14 C 1

H 12 H 2

O 6 O 3

C7H6O2 + O2 CO2 + H2O

2C7H6O2 + O2 CO2 + H2O

2C7H6O2 + O2 14CO2 + H2O

2C7H6O2 + O2 14CO2 + 6H2O

2C7H6O2 + 15O2 14CO2 + 6H2O

Reactants Products

C 14 C 14

H 12 H 2

O 6 O 29

Reactants Products

C 14 C 14

H 12 H 12

O 6 O 34

Reactants Products

C 14 C 14

H 12 H 12

O 34 O 34