Everyday Chemical Equations-- Which ones are common?

Question

For my honors chemistry class, I have to make a comic book featuring 10 balanced chemical equations that go along with the plot. What are some commonly-known reactions that most people have heard of (ex: NaHCO3 + HCl yields NaCl + H2O + CO2, or common table salt)? All relavant answers are appreciated (unfortunantly, a plot is still in the works, with no improvement since yesterday).

Answer 1

Na+ + OH- --> NaOH (sodium hydroxide)

Na+ + Cl- --> NaCl (salt)

3H+ + PO43- --> H3PO4 (phosphoric acid)

2Na+ + S2O32- --> Na2S2O3


Zn + 2 HCl = ZnCl(2) + H2

Example: H2 + N2 --> NH3 Balanced: 3H2 + N2 = 2NH3

Example : H2 + O2 --> H2O Balanced: 2H2 + O2 = 2H2O

Al + HCl --> AlCl3 + H2

A silver spoon tarnishes. The silver reacts with sulfur in the air to make silver sulfide, the black material we call tarnish.
2 Ag + S Ag2S

An iron bar rusts. The iron reacts with oxygen in the air to make rust.
4 Fe + 3 O2 2 Fe2O3

Methane burns. Methane combines with oxygen in the air to make carbon dioxide and water vapor.
CH4 + 2 O2 CO2 + 2 H2O

An antacid (calcium hydroxide) neutralizes stomach acid (hydrochloric acid).
Ca(OH)2 + 2 HCl CaCl2 + 2 H2O

Glucose (simple sugar) ferments to ethyl alcohol and carbon dioxide. The sugar in grapes or from grain ferments with yeast to make the alcohol and carbon dioxide. The carbon dioxide is the gas that bubbles out of beer or champaign.
C6H12O6 (glucose) 2 C2H5OH (ethyl alcohol) + 2 CO2

Alcohol plus oxygen becomes vinegar and a molecule of water. As in the fermentation of glucose, this is a more complex reaction than it appears here because it is a biochemical reaction.
C2H5OH + O2 HC2H3O2 + H2O



A Simple SN2 Reaction
CH3Br + Cl ---> CH3Cl + Br


potassium chloride
silver nitrate
barium chloride

1. sulfur trioxide and water combine to make sulfuric acid.

2. lead II nitrate and sodium iodide react to make lead iodide and sodium nitrate.

3. calcium fluoride and sulfuric acid make calcium sulfate and hydrogen fluoride (Hydrofluoric acid)

4. calcium carbonate will come apart when you heat it to leave calcium oxide and carbon dioxide.

5. ammonia gas when it is pressed into water will make ammonium hydroxide.

6. sodium hydroxide neutralizes carbonic acid

7. zinc sulfide and oxygen become zinc oxide and sulfur.

8. lithium oxide and water make lithium hydroxide

9. aluminum hydroxide and sulfuric acid neutralize to make water and aluminum sulfate.

10. sulfur burns in oxygen to make sulfur dioxide.

11. barium hydroxide and sulfuric acid make water and barium sulfate.

12. aluminum sulfate and calcium hydroxide become aluminum hydroxide and calcium sulfate.

13. copper metal and silver nitrate react to form silver metal and copper II nitrate.

14. sodium metal and chlorine react to make sodium chloride.

15. calcium phosphate and sulfuric acid make calcium sulfate and phosphoric acid.

16. phosphoric acid plus sodium hydroxide.

17. propane burns (with oxygen)

18. zinc and copper II sulfate yield zinc sulfate and copper metal

19. sulfuric acid reacts with zinc

20. acetic acid ionizes.

21. steam methane to get hydrogen and carbon dioxide

22. calcium oxide and aluminum make aluminum oxide and calcium

23. chlorine gas and sodium bromide yield sodium chloride and bromine

ANSWERS TO EQUATIONS

1. SO3 + H2O H2SO4
SYNTHESIS

2. Pb(NO3)2 + 2NaI PbI2 + 2NaNO3
DOUBLE REPLACEMENT (lead II iodide precipitates)

3. CaF2 + H2SO4 CaSO4 + 2 HF
DOUBLE REPLACEMENT (calcium sulfate precipitates)

4. CaCO3 CaO + CO2
DECOMPOSITION

5. NH3 + H2O NH4OH
SYNTHESIS

6. 2 NaOH + H2CO3 Na2CO3 + 2 H2O
DOUBLE REPLACEMENT OR ACID-BASE NEUTRALIZATION

7. 2 ZnS + O2 2 ZnO + 2 S
ANIONIC SINGLE REPLACEMENT

8. Li2O + H2O 2 LiOH
SYNTHESIS

9. 2 Al(OH)3 + 3 H2SO4 6 H2O + Al2(SO4)3
DOUBLE REPLACEMENT OR ACID-BASE NEUTRALIZATION

10. S + O2 SO2
SYNTHESIS

11. Ba(OH)2 + H2SO4 2 H2O + BaSO4
DOUBLE REPLACEMENT OR ACID-BASE NEUTRALIZATION

12. Al2(SO4)3 + 3 Ca(OH)2 2 Al(OH)3 + 3 CaSO4
DOUBLE REPLACEMENT
(BOTH calcium sulfate and aluminum hydroxide are precipitates.)

13. Cu + 2AgNO3 2Ag + Cu(NO3)2
CATIONIC SINGLE REPLACEMENT

14. 2Na + Cl2 2 NaCl
SYNTHESIS

15. Ca3(PO4)2 + 3 H2SO4 3 CaSO4 + 2 H3PO4
DOUBLE REPLACEMENT

16. H3(PO4) + 3 NaOH Na3PO4 + 3 H2O
DOUBLE REPLACEMENT (NEUTRALIZATION)

17. C3H8 + 5 O2 4 H2O + 3 CO2
BURNING OF A HYDROCARBON

18. Zn + CuSO4 ZnSO4 + Cu
CATIONIC SINGLE REPLACEMENT

19. H2SO4 + Zn ZnSO4 + H2
CATIONIC SINGLE REPLACEMENT

20. HC2H3O2 H+ + (C2H3O2)-
IONIZATION (NOTICE THAT IT IS REVERSIBLE)

21. 2 H2O + CH4 4 H2 + CO2

22. 3 CaO + 2 Al Al2O3 + 3 Ca
CATIONIC SINGLE REPLACEMENT

23. Cl2 + 2 NaBr 2 NaCl + Br2
ANIONIC SINGLE REPLACEMENT

Answer 2

2h2o + energy = 2h2 + O2

or vise versa: 2h2 + 02 = 2h2o

rusting: 2fe + 3O2 = fe2O3

applying "salt" to icy roads

adding carbonation to pop, or releasing it with a burp!

adding chlorine to a pool

antacids to an upset stomach (base + acid)...

just a few ideas...