Worksheet Writing and Balancing Chemical Reactions

Worksheet: Writing and Balancing Chemical Reactions 1. Balance the following equations and indicate the type of reaction as formation, decomposition, single replacement, double replacement, hydrocarbon combustion, or other. a. b. c. d. e. f. g. h. i. j. k. l. m. n. o. p. q. r. s. t. u. v. w. x. y. z. ____ Cu (s) + ____ O2 (g) → ____ CuO (s) ____ H2O (l) → ____ H2 (g) + ____ O2 (g) ____ Fe (s) + ____ H2O (g) → ____ H2 (g) + ____ Fe3O4 (s) ____ AsCl3 (aq) + ____ H2S (aq) → ____ As2S3 (s) + ____ HCl (aq) ____ CuSO4 • 5 H2O (s) → ____ CuSO4 (s) + ____ H2O (g) ____ Fe2O3 (s) + ____ H2 (g) → ____ Fe (s) + ____ H2O (l) ____ CaCO3 (s) → ____ CaO (s) + ____ CO2 (g) ____ Fe (s) + ____ S8 (s) → ____ FeS (s) ____ H2S (aq) + ____ KOH (aq) → ____ H2O (l) + ____ K2S (aq) ____ NaCl (l) → ____ Na (l) + ____ Cl2 (g) ____ Al (s) + ____ H2SO4 (aq) → ____ H2 (g) + ____ Al2(SO4)3 (aq) ____ H3PO4 (aq) + ____ NH4OH (aq) → ____ H2O (l) + ____ (NH4)3PO4 (aq) ____ C3H8 (g) + ____ O2 (g) → ____ CO2 (g) + ____ H2O (l) ____ Al (s) + ____ O2 (g) → ____ Al2O3 (s) ____ CH4 (g) + ____ O2 (g) → ____ CO2 (g) + ____ H2O (l) ____ K2SO4 (aq) + ____ BaCl2 (aq) → ____ KCl (aq) + ____ BaSO4 (s) ____ C5H12 (l) + ____ O2 (g) → ____ CO2 (g) + ____ H2O (g) ____ Ca(OH)2 (aq) + ____ NH4Cl (aq) → ____ NH4OH (aq) + ____ CaCl2 (aq) ____ V2O5 (s) + ____ Ca (s) → ____ CaO (s) + ____ V (s) ____ Na (s) + ____ ZnI2 (aq) → ____ NaI (aq) + ____ Zn (s) ____ C7H6O3 (l) + ____ O2 (g) → ____ CO2 (g) + ____ H2O (l) ____ Ca (s) + ____ N2 (g) → ____ Ca3N2 (s) ____ Fe2O3 (s) + ____ H2 (g) → ____ Fe (s) + ____ H2O (l) ____ C15H30 (l) + ____ O2 (g) → ____ CO2 (g) + ____ H2O (g) ____ BN (s) + ____ F2 (g) → ____ BF3 (s) + ____ N2 (g) ____ C12H26 (l) + ____ O2 (g) → ____ CO2 (g) + ____ H2O (g) 2. Predict the product(s) along with the states, indicate the type of reaction, and balance the following chemical reactions. a. b. c. d. e. f. g. h. i. j. A solution of lead (II) nitrate is mixed with a solution of sodium iodide. Solid zinc sulfide reacts with oxygen in the air. Liquid butane (C4H10 (l)) is used as a fuel to ignite a lighter. Barium hydroxide solution is neutralized by adding hydrochloric acid (HCl (aq)). Copper metal is placed in a solution of silver nitrate. Sulfur burns in oxygen to make sulfur dioxide gas. A solution of aluminum sulfate is mixed with a solution of calcium hydroxide. Zinc metal is placed in sulfuric acid (H2SO4 (aq)). Aluminum powder is placed in a container filled with chlorine gas. Sucrose undergoes cellular respiration. Answers Question 1 a. 2 Cu (s) + O2 (g) → 2 CuO (s) b. 2 H2O (l) → 2 H2 (g) + O2 (g) c. 3 Fe (s) + 4 H2O (g) → 4 H2 (g) + Fe3O4 (s) d. 2 AsCl3 (aq) + 3 H2S (aq) → As2S3 (s) + 6 HCl (aq) e. CuSO4 • 5 H2O (s) → CuSO4 (s) + 5 H2O (g) f. Fe2O3 (s) + 3 H2 (g) → 2 Fe (s) + 3 H2O (l) g. CaCO3 (s) → CaO (s) + CO2 (g) h. 8 Fe (s) + S8 (s) → 8 FeS (s) i. H2S (aq) + 2 KOH (aq) → 2 H2O (l) + K2S (aq) j. 2 NaCl (l) → 2 Na (l) + Cl2 (g) k. 2 Al (s) + 3 H2SO4 (aq) → 3 H2 (g) + Al2(SO4)3 (aq) l. H3PO4 (aq) + 3 NH4OH (aq) → 3 H2O (l) + (NH4)3PO4 (aq) m. C3H8 (g) + 5 O2 (g) → 3 CO2 (g) + 4 H2O (l) n. 4 Al (s) + 3 O2 (g) → 2 Al2O3 (s) o. CH4 (g) + 2 O2 (g) → CO2 (g) + 2 H2O (l) p. K2SO4 (aq) + BaCl2 (aq) → 2 KCl (aq) + BaSO4 (s) q. C5H12 (l) + 8 O2 (g) → 5 CO2 (g) + 6 H2O (g) r. Ca(OH)2 (aq) + 2 NH4Cl (aq) → 2 NH4OH (aq) + CaCl2 (aq) s. V 2O5 (s) + 5 Ca (s) → 5 CaO (s) + 2 V (s) t. 2 Na (s) + ZnI2 (aq) → 2 NaI (aq) + Zn (s) u. C 7H6O3 (l) + 7 O2 (g) → 7 CO2 (g) + 3 H2O (l) v. 3 Ca (s) + N2 (g) → Ca3N2 (s) w. Fe2O3 (s) + 3 H2 (g) → 2 Fe (s) + 3 H2O (l) x. 2 C15H30 (l) + 45 O2 (g) → 30 CO2 (g) + 30 H2O (g) y. 2 BN (s) + 3 F2 (g) → 2 BF3 (s) + N2 (g) z. 2 C12H26 (l) + 37 O2 (g) → 24 CO2 (g) + 26 H2O (g) (formation) (decomposition) (single replacement) (double replacement) (other – dehydration or decomposition) (single replacement) (other or decomposition) (formation) (double replacement) (decomposition) (single replacement) (double replacement) (hydrocarbon combustion) (formation) (hydrocarbon combustion) (double replacement) (hydrocarbon combustion) (double replacement) (single replacement) (single replacement) (hydrocarbon combustion) (formation) (single replacement) (hydrocarbon combustion) (single replacement) (hydrocarbon combustion) Question 2 a. Pb(NO3)2 (aq) + 2 NaI (aq) → PbI2 (s) + 2 NaNO3 (aq) b. 8 ZnS (s) + 4 O2 (g) → 8 ZnO (s) + S8 (s) c. 2 C4H10 (l) + 13 O2 (g) → 8 CO2 (g) + 10 H2O (g) d. Ba(OH)2 (aq) + 2 HCl (aq) → BaCl2 (aq) + 2 H2O (l) e. Cu (s) + 2 AgNO3 (aq) → Cu(NO3)2 (aq) + 2 Ag (s) f. S8 (s) + 8 O2 (g) → 8 SO2 (g) g. Al2(SO4)3 (aq) + 3 Ca(OH)2 (aq) → 2 Al(OH)3 (s) + 3 CaSO4 (s) h. Zn (s) + H2SO4 (aq) → ZnSO4 (aq) + H2 (g) i. 2 Al (s) + 3 Cl2 (g) → 2 AlCl3 (s) j. C12H22O11 (s) + 12 O2 (g) → 12 CO2 (g) + 11 H2O (l) (double replacement) (single replacement) (hydrocarbon combustion) (double replacement) (single replacement) (formation) (double replacement) (single replacement) (formation) (hydrocarbon combustion)