Name: ______Hr. ____ Date: ______
CHEMISTRY I CHAPTER 6 PROBLEM SET #3
Balance the following skeleton equations using coefficients. If the equation is balanced as written, write the word BALANCED next to the equation. If you leave it blank, I will assume you didn’t answer it and count it wrong.
1. C3H6O ------à C9H12 + H2O
2. H3AsO4 + KOH ------à K3AsO4 + H2O
3. C4H10 + O2 ----à CO2 + H2O
4. CaO + HCl -----à CaCl2 + H2O
5. NH3 + O2 -----à NO + H2O
6. Fe3O4 + O2 ----à Fe2O3
7. SO3 + PbO2 + Pb ----à PbSO4
8. FeS2 + O2 -----à Fe2O3 + SO2
9. HBO2 ----à H2B4O7 + H2O
10. H3BO3 -----à B2O3 + H2O
11. Fe + F2 -----à FeF3
12. P4O10 + NaOH -----à Na3PO4 + H2O
You will need to write the skeleton equation and then balance.
13. gaseous ammonium nitrite breaks down to produce nitrogen gas and gaseous water
14. solid silicon tetrahydride reacts with oxygen gas to produce solid silicon dioxide and gaseous water
15. ethanol (C2H5OH) and gaseous oxygen can be produced from gaseous water and gaseous carbon dioxide
16. silver nitrate combines with potassium phosphate to produce silver phosphate and potassium nitrate
17. nitric acid reacts with calcium hydroxide to produce calcium nitrate and water
18. solid carbon disulfide reacts with gaseous oxygen to produce carbon dioxide gas and gaseous sulfur dioxide
19. phosphoric acid reacts with calcium hydroxide to produce calcium phosphate and water
20. iron (III) nitrate reacts with ammonia (NH3) and water to produce iron (III) hydroxide and ammonium nitrate
21. barium perchlorate and water are produced when dichlorine heptoxide reacts with barium hydroxide
22. iron (II) chloride reacts with tin (IV) chloride to produce iron (III) chloride and tin (II) chloride
23. chromium (III) hydroxide reacts with perchloric acid to produce chromium (III) perchlorate and water
24. sulfuric acid reacts with sodium carbonate to produce sodium sulfate, carbon dioxide and water
25. potassium chlorate decomposes to produce potassium chloride and oxygen gas