Balancing Chemical Equations Worksheet Answers Check these answers

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) • #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 Reactants H 2 + O 2 H 2 O H 2 O 2 O 1 Reactants H 2 + O 2 2 H 2 O Products H 2 H 4 O 2 Reactants 2 H 2 + O 2 2 H 2 O Products H 4 O 2

2. Hg. O Hg + O 2 Reactants Hg. O Hg + O 2 Hg 1 O O 1 Reactants 2 Hg. O Hg + O 2 2 Products Hg 2 Hg 1 O O 2 Reactants 2 Hg. O 2 Hg + O 2 Products Hg 2 O O 2 2

3. CO 2 + H 2 O C 6 H 12 O 6 + O 2 Reactants C 1 H 2 O 3 Products C 6 H 12 O 8 CO 2 + 6 H 2 O C 6 H 12 O 6 + O 2 Reactants C 1 H 12 O 8 Products C 6 H 12 O 8 6 CO 2 + 6 H 2 O C 6 H 12 O 6 + O 2 Reactants C 6 H 12 O 18 Products C 6 H 12 O 8 6 CO 2 + 6 H 2 O C 6 H 12 O 6 + 6 O 2 Reactants C 6 H 12 O 18 Products C 6 H 12 O 18 CO 2 + H 2 O C 6 H 12 O 6 + O 2

4. Na + H 2 O Na. OH + H 2 Reactants Na 1 H 2 O 1 Products Na 1 H 3 O 1 Na + 2 H 2 O Na. OH + H 2 Reactants Na 1 H 4 O 2 Products Na 1 H 3 O 1 Na + 2 H 2 O 2 Na. OH + H 2 Reactants Na 1 H 4 O 2 Products Na 2 H 4 O 2 Reactants Na 2 H 4 O 2 Products Na 2 H 4 O 2 2 Na + 2 H 2 O 2 Na. OH + H 2

5. H 3 PO 4 H 4 P 2 O 7 + H 2 O Reactants H 3 P 1 O 4 Products H 6 P 2 O 8 2 H 3 PO 4 H 4 P 2 O 7 + H 2 O Reactants H 6 P 2 O 8 Products H 6 P 2 O 8

6. C 7 H 6 O 2 CO 2 + H 2 O C 7 H 6 O 2 + O 2 CO 2 + H 2 O 2 C 7 H 6 O 2 + O 2 14 CO 2 + 6 H 2 O 2 C 7 H 6 O 2 + 15 O 2 14 CO 2 + 6 H 2 O Reactants C 7 H 6 O 4 Products C 1 H 2 O 3 Reactants C 14 H 12 O 6 Products C 14 H 2 O 29 Reactants C 14 H 12 O 6 Products C 14 H 12 O 34 Reactants C 14 H 12 O 34 Products C 14 H 12 O 34