6.2 TYPES OF REACTIONS Supplemental Practice Problems,

Balance and classify the following equations.

1. Na(s) + Cl2(g) à NaCl(s)

2. Br2(g) + H2O(l) + SO2(g) à HBr(aq) + H2SO4(aq)

3. CaO(s) + H2O(l) à Ca(OH)2(aq)

4. P2O5(s) + BaO(s) à Ba3(PO4)2(s)

Balance and classify each of the following reactions after predicting the products.

5. barium oxide(s) + water(l) à

6. sulfur(IV) oxide(g) + magnesium oxide(s) à

7. carbon dioxide(g) + water(l) à

8. magnesium(s) + fluorine(g) à

9. nitrogen(III) oxide(g) + water(l) à

Balance and classify the following equations.

10. KNO3(s) à KNO2(s) + O2(g)

11. PbO2(s) à PbO(s) + O2(g)

12. NaOH(s) à Na2O(s) + H2O(l)

13. MgCO3(s) à MgO(s) + CO2(g)

Balance and classify each of the following reactions after predicting the products.

14. When heated, sulfurous acid, H2SO3à

15. When heated, calcium carbonate à

16. When heated, iron(III) hydroxideà

17. When heated, sodium chlorate à

18. When heated, silver oxide à

19. By electricity, waterà

Balance and classify the following reactions.

20. Al(s) + Pb(NO3)2(aq) àAl(NO3)3(aq) + Pb(s)

21. Cu(s) + AgNO3(aq) à Cu(NO3)2(aq) + Ag(s)

22. K(s) + H2O(l) à KOH(aq) + H2(g)

23. Cl2(g) + LiI(aq) à LiCl(aq) + I2(g)

Balance and classify each of the following reactions after predicting the products.

24. aluminum(s) + hydrochloric acid(aq) à

25. iron(s) + copper(II) sulfate(aq) à (iron(II) compound is formed)

26. zinc(s) + sulfuric acid(aq) à

27. chlorine(g) + magnesium iodide(aq) à

28. sodium(s) + water(l) à

29. magnesium(s) + hydrochloric acid(aq) à

Balance and classify the following equations.

30. Ca(OH)2(aq) + HCl(aq) à CaCl2(aq) + H2O(l)

31. KOH(aq) + H3PO4(aq) à K3PO4(aq) + H2O(l)

32. Al(NO3)3(aq) + H2SO4(aq) à Al2(SO4)3(aq) + HNO3(aq)

33. Na2SO3(aq) + HCl(aq) à NaCl(aq) + H2O(l) + SO2(g)

Balance and classify each of the following reactions after predicting the products.

34. sodium hydroxide(aq) + phosphoric acid(aq) à

35. ammonium sulfate(aq) + calcium hydroxide(aq) à

36. silver nitrate(aq) + potassium chloride(aq) à

37. magnesium hydroxide(aq) + phosphoric acid(aq) à

38. iron(II) sulfide(s) + hydrochloric acid(aq) à

39. ammonium sulfide(aq) + iron(II) nitrate(aq) à

Balance and classify the following equations.

40. C3H8(g) + O2(g) à CO2(g) + H2O(l)

41. Li(s) + O2(g) à Li2O(s)

42. Fe(s) + O2(g) à Fe2O3(s)

43. H2(g) + O2(g) à H2O(l)

Balance and classify each of the following reactions after predicting the products.

44. methanol(CH3OH)(l) + oxygen(g) à

45. potassium(s) + oxygen(g) à

46. carbon(s) + oxygen(g) à

SECTION REVIEW

Write a balanced equation and indicate the reaction type (single or double displacement, decomposition, synthesis, or combustion) for each of the following reactions.

1. aluminum nitrate(aq) + sodium hydroxide(aq) à aluminum hydroxide(s) + sodium nitrate(aq)

2. sulfur trioxide(g) à sulfur dioxide(g) + oxygen(g)

3. phosphoric acid(aq) + magnesium hydroxide(aq) à magnesium phosphate(s) + water(l)

4. ammonium nitrite(s) à nitrogen(g) + water(l)

5. ammonia(g) + oxygen(g) à dinitrogen monoxide(g) + water(g)

6. barium chloride(aq) + sodium sulfate(aq) à sodium chloride(aq) + barium sulfate(s)

7. carbon dioxide(g) + water(l) à carbonic acid(aq)

8. magnesium hydroxide(aq) + ammonium phosphate(aq) à magnesium phosphate(s) + ammonia(g) + water(l)

9. aluminum(s) + copper(II) chloride(aq) à aluminum chloride(aq) + copper(s)

10. iron(s) + silver acetate(aq) à iron(II) acetate(aq) + silver(s)

Balance and classify each of the following reactions after predicting the products.

11. magnesium hydroxide(aq) + phosphoric acid(aq) à

12. iron(II) sulfide(s) + hydrochloric acid(aq) à

13. ammonium sulfide(aq) + iron(II) nitrate(aq) à

14. sulfuric acid(aq) + potassium hydroxide(aq) à

15. aluminum sulfate(aq) + calcium phosphate(s) à

16. barium carbonate(s) + hydrochloric acid(aq) à

17. silver acetate(aq) + potassium chromate(aq) à

18. ammonium phosphate(aq) + barium hydroxide(aq) à

19. chromium(III) sulfite(aq) + sulfuric acid(aq) à

20. calcium hydroxide(aq) + nitric acid(aq) à

21. One type of fire extinguisher contains concentrated sulfuric acid that reacts

with a solution to produce carbon dioxide. What solution, sodium hydrogen

carbonate or sodium carbonate, would give the greater amount of carbon

dioxide in a reaction with the same amount of acid? What type of reaction occurred?

 

22. If iron pyrite, FeS2, is not removed from coal, oxygen from the air will combine with both the iron and the sulfur as the coal burns. Write a balanced

chemical equation illustrating the formation of iron(III) oxide and sulfur

dioxide. What type of reaction occurred?

 

23. Sodium sulfite, Na2SO3, can be used for the removal of SO2 produced as a by-product in manufacturing operations. The SO2 reacts with a sodium sulfite solution to form sodium hydrogen sulfite. The NaHSO3 solution is heated to regenerate the original sodium sulfite for reuse. Write the equation for this reaction. What type of reaction occurred?