CHEMICAL EQUATIONS I

Part I: Identify the type of reaction and write a balanced chemical equation for each of the following reactions.

1. Zinc + Sulfur zinc sulfide

Zn + S ZnS composition

2. potassium chloride + silver nitrate silver chloride(s) + potassium nitrate

KCl + AgNO3 KNO3 + AgCl methathesis

3. calcium oxide + water calcium hydroxide

CaO + H2O Ca(OH)2 composition

4. sodium hydroxide + hydrochloric acid sodium chloride + water

NaOH + HClaq NaCl + H2O methathesis

5. magnesium bromide + chlorine magnesium chloride + bromine

MgBr2 + Cl2 MgCl2 + Br2 replacement

6. sodium chloride + sulfuric acid sodium sulfate + hydrogen chloride(g)

2NaCl + H2SO4 Na2SO4 + 2HClg methathesis

7. aluminum + iron(III) oxide aluminum oxide + iron

2Al + Fe2O3 Al2O3 + 2Fe replacement

8. ammonium nitrite nitrogen(g) + water

NH4NO2 N2 +2 H2O decomposition

9. silver nitrate + nickel nickel(II) nitrate + silver(s)

2AgNO3 + Ni Ni(NO3)2 + 2Ag replacement

10. hydrogen + bromine hydrogen bromide(g)

H2 + Br2 2HBr composition

Part II: Complete and balance the following chemical equations.

Composition reactions:

1. sodium + iodine

2Na + I2 2NaI

2. calcium + oxygen

2Ca + O2 2CaO

3. hydrogen + chlorine

H2 + Cl2 2HCl

Decomposition reactions:

4. nickel(II) chlorate

Ni(ClO3)2 NiCl2 + 3O2

5. barium carbonate

BaCO3 BaO + CO2

6. zinc hydroxide

Zn(OH)2 ZnO + H2O

Replacement reactions:

7. aluminum + sulfuric acid

2Al + 3H2SO4 Al2(SO4)3 + 3H2

8. potassium iodide + chlorine

2KI + Cl2 2 KCl + I2

9. iron + copper(II) nitrate iron(II) nitrate +

Fe + Cu(NO3)2 Fe(NO3)2 + Cu

Metathesis reactions:

10. silver nitrate + zinc chloride

2 Ag NO3 + ZnCl2 2 AgCl +Zn (NO3)2

11. copper(II) hydroxide + acetic acid

Cu(OH)2 + 2HCH3CO2 Cu(CH3CO2)2 + 2H2O

12. iron(II) sulfate + ammonium sulfide

Fe SO4 + (NH4)2 S Fe S +(NH4)2 SO4

 

CHEMICAL EQUATIONS II

 

Identify the type of reaction and write a balanced chemical equation for each of

the following reactions.

1. barium chloride + sodium sulfate metathesis

BaCl2 + Na2SO4 2NaCl + BaSO4

2. calcium + hydrochloric acid replacement

Ca + 2HCl H2 + Ca Cl2

3. iron(II) sulfide + hydrochloric acid hydrogen sulfide(g) + metathesis

FeS + 2HCl H2S + FeCl2

4. zinc chloride + ammonium sulfide metathesis

ZnCl2 + ( NH4)2 S ZnS + 2NH4Cl

5. ammonia + oxygen nitric acid + water metathesis

NH3 + 2O2 H NO3 + H2O

6. magnesium + nitric acid replacement

Mg + 2HNO3 Mg (NO3)2 + H2

7. potassium + water replacement

2K + 2H2O 2 KOH + H2

8. sodium iodide + bromine replacement

2NaI + Br2 2 NaBr + I2

9. silver + sulfur composition

2 Ag +S Ag2S

10. sodium chlorate decomposition

2 NaClO3 2NaCl + 3O2

11. carbon + steam carbon monoxide(g) + hydrogen(g) replacement

C + H2O CO + H2

12. zinc + lead(II) acetate replacement

Zn + Pb(CH3CO2)2 Zn(CH3CO2)2 + Pb

13. iron(III) hydroxide decomposition

2Fe (OH)3 Fe2O3 + 3H2O

14. iron(III) oxide + carbon monoxide iron + carbon dioxide(g) metathesis

Fe2O3 + 3CO 2Fe + 3CO2

15. lead(II) acetate + hydrogen sulfide metathesis

Pb( CH3 CO2)2 +H2S 2CH3 CO2 H + PbS

16. aluminum bromide + chlorine replacement

2AlBr3 + 3Cl2 2AlCl3 + 3Br2

17. magnesium carbonate decomposition

MgCO3 MgO + CO2

18. iron(III) chloride + sodium hydroxide metathesis

FeCl3 + 3NaOH 3NaCl + Fe(OH)3

19. calcium oxide + diphosphorus pentoxide calcium phosphate composition

3CaO + P2O5 Ca3(PO4)2

20. chromium + oxygen composition

2Cr + 3O2 2CrO3

21. sodium + water replacement

2Na + 2H2O H2 + 2NaOH

22. sodium carbonate + nitric acid metathesis

Na2CO3 + 2HNO3 2NaNO3 + H2CO3

23. aluminium hydroxide + sulfuric acid metathesis

2Al(OH)3 + 3H2SO4 Al2(SO4)3 + 6H2O

24. sodium sulfite + sulfuric acid metathesis

Na2SO3 + H2SO4 Na2SO4 + H2SO3

25. calcium hydroxide + ammonium sulfate calcium sulfate + water + ammonia(g) metathesis

Ca(OH)2 + (NH4)2SO4 CaSO4 + 2H2O + 2 NH3