Chemistry Practice Test
Chemistry 101 Chapter 4 Practice Test
February 2013
1. A 20.0-g sample of HF is dissolved in water to give 2.0 102 mL of solution. The concentration of the solution is: a) 1.0 M b) 3.0 M c) 0.10 M d) 5.0 M e) 10.0 M Ans: d) 5.0 M Page: 4.3
2. Which of the following aqueous solutions contains the greatest number of ions? a) 400.0 mL of 0.10 M NaCl b) 300.0 mL of 0.10 M CaCl2 c) 200.0 mL of 0.10 M FeCl3 d) 200.0 mL of 0.10 M KBr e) 800.0 mL of 0.10 M sucrose ANS: b) 300.0 mL of 0.10 M CaCl2 PAGE: 4.3
3. What mass of calcium chloride, CaCl2, is needed to prepare 2.850 L of a 1.56 M solution? a) 25.9 g b) 60.8 g c) 111 g d) 203 g e) 493 g ANS: e) 493 g PAGE: 4.3
4. What volume of 18.0 M sulfuric acid must be used to prepare 15.5 L of 0.195 M H2SO4? a) 168 mL b) 0.336 L c) 92.3 mL d) 226 mL e) none of these Ans: a) 168 mL Page: 4.3
5. The net ionic equation for the reaction of aluminum sulfate and sodium hydroxide contains which of the following species? a) 3Al3+(aq) b) OH–(aq) c) 3OH–(aq) d) 2Al3+(aq) e) 2Al(OH)3(s) ANS: c) 3OH–(aq) PAGE: 4.6,8
6. Which of the following is a strong acid? a) HF b) KOH c) HClO4 d) HClO e) HBrO ANS: c) HClO4 PAGE: 4.2
7. Which of the following is not a strong base? a) Ca(OH)2 b) KOH c) NH3 d) LiOH e) Sr(OH)2 Ans: c) NH3 Page: 4.2
8. When sodium chloride and lead(II) nitrate react in an aqueous solution, which of the following terms will be present in the balanced molecular equation? a) PbCl(s) b) Pb2Cl(s) c) NaNO3(aq) d) 2NaNO3(aq) e) 2PbCl2(s) Ans: d) 2NaNO3(aq) Page: 4.5,6
9. You mix 260. mL of 1.20 M lead(II) nitrate with 300. mL of 1.90 M potassium iodide. The lead(II) iodide is insoluble. Which of the following is false? a) The final concentration of Pb2+ ions is 0.0482 M. b) You form 131 g of lead(II) iodide. c) The final concentration of K+ is 1.02 M. d) The final concentration of NO3- is
February 2013
1. A 20.0-g sample of HF is dissolved in water to give 2.0 102 mL of solution. The concentration of the solution is: a) 1.0 M b) 3.0 M c) 0.10 M d) 5.0 M e) 10.0 M Ans: d) 5.0 M Page: 4.3
2. Which of the following aqueous solutions contains the greatest number of ions? a) 400.0 mL of 0.10 M NaCl b) 300.0 mL of 0.10 M CaCl2 c) 200.0 mL of 0.10 M FeCl3 d) 200.0 mL of 0.10 M KBr e) 800.0 mL of 0.10 M sucrose ANS: b) 300.0 mL of 0.10 M CaCl2 PAGE: 4.3
3. What mass of calcium chloride, CaCl2, is needed to prepare 2.850 L of a 1.56 M solution? a) 25.9 g b) 60.8 g c) 111 g d) 203 g e) 493 g ANS: e) 493 g PAGE: 4.3
4. What volume of 18.0 M sulfuric acid must be used to prepare 15.5 L of 0.195 M H2SO4? a) 168 mL b) 0.336 L c) 92.3 mL d) 226 mL e) none of these Ans: a) 168 mL Page: 4.3
5. The net ionic equation for the reaction of aluminum sulfate and sodium hydroxide contains which of the following species? a) 3Al3+(aq) b) OH–(aq) c) 3OH–(aq) d) 2Al3+(aq) e) 2Al(OH)3(s) ANS: c) 3OH–(aq) PAGE: 4.6,8
6. Which of the following is a strong acid? a) HF b) KOH c) HClO4 d) HClO e) HBrO ANS: c) HClO4 PAGE: 4.2
7. Which of the following is not a strong base? a) Ca(OH)2 b) KOH c) NH3 d) LiOH e) Sr(OH)2 Ans: c) NH3 Page: 4.2
8. When sodium chloride and lead(II) nitrate react in an aqueous solution, which of the following terms will be present in the balanced molecular equation? a) PbCl(s) b) Pb2Cl(s) c) NaNO3(aq) d) 2NaNO3(aq) e) 2PbCl2(s) Ans: d) 2NaNO3(aq) Page: 4.5,6
9. You mix 260. mL of 1.20 M lead(II) nitrate with 300. mL of 1.90 M potassium iodide. The lead(II) iodide is insoluble. Which of the following is false? a) The final concentration of Pb2+ ions is 0.0482 M. b) You form 131 g of lead(II) iodide. c) The final concentration of K+ is 1.02 M. d) The final concentration of NO3- is