Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
23) Based on the equations below, which metal is the most active? Pb(NO3)2(aq)?Ni(s)?Ni(NO3)2(aq)?Pb(s) Pb(NO3)2(aq)?Ag(s)?No reaction Cu(NO3)2(aq)?Ni(s)?Ni(NO3)2(aq)?Cu(s)
A) Ni B) Ag C) Cu D) Pb E) N
Answer: A Diff: 3
Page Ref: Sec. 4.4
24) When gold dissolves in aqua regia, what is reduced? H? N+5 Cl? H2O Au
A) H? B) N+5 C) Cl? D) H2O E) Au
Answer: B Diff: 4
Page Ref: Sec. 4.5
Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
25) What is the concentration (M) of KCl in a solution made by mixing 25.0 mL of 0.100 M KCl with 50.0 mL of 0.100 M KCl?
A) 0.100 B) 0.0500 C) 0.0333 D) 0.0250 E) 125
Answer: A Diff: 3
Page Ref: Sec. 4.5
26) What is the concentration (M) of CH3OH in a solution prepared by dissolving 11.7 g of CH3OH in sufficient water to give exactly 230 mL of solution?
A) 11.9
B) 1.59? 10-3 C) 0.0841 D) 1.59
E) 11.9 ?10-3
Answer: D Diff: 3
Page Ref: Sec. 4.5
27) How many grams of H3PO4 are in 175 mL of a 3.5 M solution of H3PO4?
A) 0.61 B) 60 C) 20 D) 4.9 E) 612
Answer: B Diff: 3
Page Ref: Sec. 4.5
Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
28) What is the concentration (M) of a NaCl solution prepared by dissolving 9.3 g of NaCl in sufficient water to give 350 mL of solution?
A) 18 B) 0.16 C) 0.45 D) 27
E) 2.7?10-2
Answer: C Diff: 3
Page Ref: Sec. 4.5
29) How many grams of NaOH (MW = 40.0) are there in 500.0 mL of a 0.175 M NaOH solution?
A) 2.19?10-3 B) 114 C) 14.0 D) 3.50
E) 3.50?103
Answer: D Diff: 3
Page Ref: Sec. 4.5
30) How many grams of CH3OH must be added to water to prepare 150 mL of a solution that is 2.0 M CH3OH?
A) 9.6?103 B) 4.3?102 C) 2.4 D) 9.6 E) 4.3
Answer: D Diff: 3
Page Ref: Sec. 4.5
Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
31) There are __________ mol of bromide ions in 0.500 L of a 0.300 M solution of AlBr3.
A) 0.150 B) 0.0500 C) 0.450 D) 0.167 E) 0.500
Answer: C Diff: 3
Page Ref: Sec. 4.5
32) How many moles of CO2? are present in 0.200 L of a 0.400 M solution ofCoI2?
A) 2.00 B) 0.500 C) 0.160 D) 0.0800 E) 0.0400
Answer: D Diff: 3
Page Ref: Sec. 4.5
33) How many moles of K+ are present in 343 mL of a 1.27 M solution of K3PO4?
A) 0.436 B) 1.31 C) 0.145 D) 3.70 E) 11.1
Answer: B Diff: 3
Page Ref: Sec. 4.5
Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
34) What are the respective concentrations (M) of Na? and SO42? afforded by dissolving 0.500 mol Na2SO4 in water and diluting to 1.33 L?
A) 0.665 and 0.665 B) 0.665 and 1.33 C) 1.33 and 0.665 D) 0.376 and 0.752 E) 0.752 and 0.376
Answer: E Diff: 4
Page Ref: Sec. 4.5
35) Calculate the concentration (M) of sodium ions in a solution made by diluting 50.0 mL of a 0.874 M solution of sodium sulfide to a total volume of 250.0 mL.
A) 0.175 B) 4.37 C) 0.525 D) 0.350 E) 0.874
Answer: D Diff: 2
Page Ref: Sec. 4.5
36) An aqueous ethanol solution (400 mL) was diluted to 4.00 L, giving a concentration of 0.0400 M. The concentration of the original solution was __________ M.
A) 0.400 B) 0.200 C) 2.00 D) 1.60 E) 4.00
Answer: A Diff: 3
Page Ref: Sec. 4.5