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67. Consider the reaction between TiO₂ and C: TiO₂ (s) + 2 C(s) → Ti(s) + 2 CO(g) A reaction vessel initially contains 10.0 g of each of the reac- tants. Calculate the masses of TiO2, C, Ti, and CO that will be in the reaction vessel after the reactants have reacted as much as possible. (Assume 100% yield.)

67. Consider the reaction between TiO₂ and C: TiO₂ (s) + 2 C(s) → Ti(s) + 2 CO(g) A reaction vessel initially contains 10.0 g of each of the reac- tants. Calculate the masses of TiO2, C, Ti, and CO that will be in the reaction vessel after the reactants have reacted as much as possible. (Assume 100% yield.)

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Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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63. Consider the reaction between NiS₂ and O₂: →→→2 NiO(s) + 4 SO₂(g) 2 NiS₂(s) + 5 O₂(g) When 11.2 g of NiS₂ react with 5.43 g of O₂, 4.86 g of NiO are obtained. Determine the limiting reactant, theoretical yield of NiO, and percent yield for the reaction. 65. Lead ions can be precipitated from solution with NaCl ac- cording to the reaction: PbCl₂(s) + 2 Na+ (aq) Pb²+ (aq) + 2 NaCl(aq) When 135.8 g of NaCl are added to a solution containing 195.7 g of Pb²+, a PbCl₂ precipitate forms. The precipitate is filtered and dried and found to have a mass of 252.4 g. Determine the limiting reactant, theoretical yield of PbCl2, and percent yield for the reaction. 67. Consider the reaction between TiO₂ and C: TiO2(s) + 2 C(s) →→→ Ti(s) + 2 CO(g) A reaction vessel initially contains 10.0 g of each of the reac- tants. Calculate the masses of TiO2, C, Ti, and CO that will be in the reaction vessel after the reactants have reacted as much as possible. (Assume 100% yield.) ENTHALPY AND STOICHIOMETRY OF AHxn 69. Classify each process as exothermic or endothermic and in- dicate the sign of AHrxn (a) butane gas burning in a lighter (c) (b) the reaction that occurs in the chemical cold packs used to ice athletic injuries the burning of wax in a candle 66
Transcribed Image Text:63. Consider the reaction between NiS₂ and O₂: →→→2 NiO(s) + 4 SO₂(g) 2 NiS₂(s) + 5 O₂(g) When 11.2 g of NiS₂ react with 5.43 g of O₂, 4.86 g of NiO are obtained. Determine the limiting reactant, theoretical yield of NiO, and percent yield for the reaction. 65. Lead ions can be precipitated from solution with NaCl ac- cording to the reaction: PbCl₂(s) + 2 Na+ (aq) Pb²+ (aq) + 2 NaCl(aq) When 135.8 g of NaCl are added to a solution containing 195.7 g of Pb²+, a PbCl₂ precipitate forms. The precipitate is filtered and dried and found to have a mass of 252.4 g. Determine the limiting reactant, theoretical yield of PbCl2, and percent yield for the reaction. 67. Consider the reaction between TiO₂ and C: TiO2(s) + 2 C(s) →→→ Ti(s) + 2 CO(g) A reaction vessel initially contains 10.0 g of each of the reac- tants. Calculate the masses of TiO2, C, Ti, and CO that will be in the reaction vessel after the reactants have reacted as much as possible. (Assume 100% yield.) ENTHALPY AND STOICHIOMETRY OF AHxn 69. Classify each process as exothermic or endothermic and in- dicate the sign of AHrxn (a) butane gas burning in a lighter (c) (b) the reaction that occurs in the chemical cold packs used to ice athletic injuries the burning of wax in a candle 66
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