8.E: Homework Chapter 8 Answer Key
- Page ID
- 202175
General Questions
1. 3 pizzas, limited by the cheese
Mole-to-Mole Conversions
3. 0.28 moles Cl2(g)
5. 3.0 moles NH3
7. 2.4 moles NaCl(aq)
9. 2NO(g) + 5H2(g) → 2NH3(g) + 2H2O(g)
2.18 moles NH3
11. 2.30 moles aluminum chloride
13. Cu2O(s) + C(s) → 2Cu(s) + CO(g)
3.2 moles carbon
Mass-to-Mass Conversions
15. 31.3 g NaCl
17. 25.1 g CH3OH
19. 2Al(s) + 3Cl2(g) → 2AlCl3(s)
0.56 g AlCl3
21. 2Fe(s) + 3S(l) → Fe2S3(s)
6.0 g Fe2S3
23. 94.2 g NO2
25. 6CO2(g) + 6H2O(l) → 6O2(g) + C6H12O6(aq)
3.8 g C6H12O6
4.1 g O2
Limiting Reactant, Theoretical Yield, and Percent Yield
27. Limiting reactant: 1.4 mol Cl2
2.8 mol KCl
29. 5.54 g H2O
18.0 g NaCl
Limiting reactant: 12.3 g NaOH
31. Limiting reactant: 0.56 mol Al
33. Limiting reactant: 1.4 g Mg
35. Limiting reactant: 21.88 g Cl2
Theoretical yield: 22.5 g HCl
54.84%
37. 4AB + C2 → 2(AB)2C
Limiting reactant: 34.5 g AB
39.2 g C2
42.9 g (AB)2C
39. C6H12O6 + 6O2 → 6CO2 + 6H2O
a. Limiting reactant: 10.5 mol O2
b. 0 Limiting reactant: 0.45 mol O2
c. 2 Limiting reactant: 13.5 g O2
d. 4 Limiting reactant: 45.654 g C6H12O6
41. SnO2 + 2H2 → Sn + 2H2O
Limiting reactant: 5.6 mol H2
3.3 x 10^2 g Sn, 11 g H2, 1.0 x 10^2 g H2O, 90. g SnO2
Challenge Problems
43. 6CO2 + 6H2O → C6H12O6 + 6O2
57.5 g C6H12O6
45. 81% CO2
57% H2O
90% NaC2H3O2
Limiting reactant: 0.99 g NaHCO3
0.52 g CO2, 0.21 g H2O, 0.97 g NaC2H3O2
47. Mg(OH)2(s) + 2HCl(aq) → MgCl2(aq) + 2H2O(l)
3.6 g Mg(OH)2