Balancing Equations and Reaction Types
PreAP Chemistry
Review Sheet
Balance the following equations:
1. NaOH + MgCl2 NaCl + Mg(OH)2
2. Fe2O3 Fe + O2
3. Al + H3PO4 AlPO4 + H2
4. Cl2 + NaOH NaCl + NaClO + H2O
5. NH4 + O2 N2 + H2O
6. Aluminum + bromine aluminum bromide
7. Copper metal + sulfuric acid Copper II sulfate + water + sulfur dioxide
8. Calcium iodide + nickel II phosphate nickel II iodide + calcium phosphate
9. magnesium bicarbonate + magnesium hydroxide magnesium carbonate + water
10. sodium + tin IV nitrate sodium nitrate + tin
Identify the type of Reaction and Predict the products.
______ 11. Ca + O2
______ 12. mercury I oxide
______ 13. Fe2O3 + H2
______ 14. aluminum + sulfuric acid
______ 15. NH4Cl + Pb(NO3)2
______ 16. Barium chloride + sodium bromide
______ 17. Carbonic acid
______ 18. C6H6 + O2
Write the equation, identify the type of reaction and Balance.
19. Iodine crystals and chlorine gas are heated to form iodine trichloride
20. Fluorine gas reacts with solid aluminum oxide to produce aluminum fluoride and
oxygen gas.
21. A piece of solid iron is dropped into a solution of sulfuric acid. Iron III sulfate
aqueous and hydrogen gas are produced.
22. When solid mercury II sulfide is heated with oxygen, liquid mercury metal and
gaseous sulfur dioxide are formed.
23. Chromium III oxide is produced when chromium III hydroxide is heated.
Water is also a product.
Give the symbols for the following:
24. solid 28. heat
25. liquid 29. yields
26. gas (two ways) 30. catalyst (location)
27. aqueous solution 31. precipitate
Solve:
32. Given: C + O2 CO2, if the are 4 grams of C and 12 grams of O2, how many
grams of CO2 are produced? What law are you applying?
33. energy + SO2 S + O2 Is this reaction exothermic or endothermic, How can
you tell?
34. Mg + H2SO4 MgSO4 + H2 + heat Is this reaction exothermic or endothermic,
How can you tell?