Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
23) A compound was found to be soluble in water. It was also found that addition of acid to an aqueous solution of this compound resulted in the formation of carbon dioxide. Which one of the following cations would form a precipitate when added to an aqueous solution of this compound?
A)NH4? B) K+ C)Cr3? D)Rb? E) Na?
Answer: C Diff: 4
Page Ref: Sec. 4.3
24) Which hydroxides are weak bases?
A) KOH, Ba(OH)2
B) Sr(OH)2, KOH, NaOH, Ba(OH)2 C) KOH, NaOH
D) KOH,NaOH, Ba(OH)2
E) None of these is a weak base.
Answer: E Diff: 2
Page Ref: Sec. 4.3
Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
25) The balanced reaction between aqueous potassium hydroxide and aqueous acetic acid is __________.
A) KOH (aq) ?HC2H3O2(aq) ?OH?(l) ?HC2H3O2?(aq) ?K (s) B) KOH (aq)?HC2H3O2(aq)?H2O (l)?KC2H3O2( aq) C) KOH (aq)?HC2H3O2(aq)?H2C2H3O3( aq)?K(s) D) KOH (aq)?HC2H3O2(aq)?KC2H3O3( aq)?H2(g) E) KOH (aq)?HC2H3O2(aq)?H2KC2H3O( aq)?O2(g)
Answer: B Diff: 2
Page Ref: Sec. 4.3
26) The balanced reaction between aqueous nitric acid and aqueous strontium hydroxide is __________.
A) HNO3(aq)?Sr(OH)2(aq)?Sr(NO3)2 (aq)?H2(g) B) HNO3(aq)?Sr(OH)2(aq)?H2O(l)?Sr(NO3)2 (aq) C) HNO3(aq)?SrOH(aq)?H2O(l)?SrNO3 (aq)
D) 2HNO3(aq)?Sr(OH)2(aq)?2H2O(l)?Sr(NO3)2(aq) E) 2HNO3(aq)?Sr(OH)2(aq)?Sr(NO3)2(aq)?2H2(g)
Answer: D Diff: 2
Page Ref: Sec. 4.3
Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
27) In which reaction does the oxidation number of oxygen increase?
A)Ba(NO3)2(aq)?K2SO4(aq)?BaSO4(s)?2KNO3(aq) B)HCl (aq) ? NaOH (aq) ? NaCl (aq) ?H2O (l) C)MgO (s) ?H2O (l)?Mg(OH)2(s) D)2 SO2 (g) ?O2 (g) ?2 SO3(g) E)2 H2O (l) ?2 H2(g)?O2 (g)
Answer: E Diff: 3
Page Ref: Sec. 4.4
28) In which reaction does the oxidation number of hydrogen change?
A)HCl (aq) ? NaOH (aq)?NaCl (aq) ?H2O (l) B)2 Na (s) ? 2H2O (l) ? 2 NaOH (aq) ?H2(g) C)CaO (s) ?H2O (l) ?Ca(OH)2 (s)
D)2 HClO4 (aq)?CaCO3(s) ? Ca(ClO4) 2 (aq) ?H2 O (l) ?CO2(g) E)SO2(g) ?H2O (l)?H2SO3 (aq)
Answer: B Diff: 3
Page Ref: Sec. 4.4
29) In which species does sulfur have the highest oxidation number?
A)S8 (elemental form of sulfur) B)H2S C)SO2
D)H2SO3 E)K2SO4
Answer: E Diff: 3
Page Ref: Sec. 4.4
Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
30) In which species does nitrogen have the highest oxidation number?
A) N2 B) NH3 C) HNO2 D) NO2- E) NaNO3
Answer: E Diff: 4
Page Ref: Sec. 4.4
31) Which compound has the atom with the highest oxidation number?
A) CaS B) Na3N C) MgSO3 D) Al(NO2)3 E) NH4Cl
Answer: C Diff: 4
Page Ref: Sec. 4.4
32) Of the choices below, which would be the best for the lining of a tank intended for use in storage of hydrochloric acid?
A) copper B) zinc C) nickel D) iron E) tin
Answer: A Diff: 5
Page Ref: Sec. 4.4
Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
33) Which of these metals will be oxidized by the ions of cobalt?
A) nickel B) tin C) iron D) copper E) silver
Answer: C Diff: 5
Page Ref: Sec. 4.4
34) Which of these metals will be oxidized by the ions of aluminum?
A) magnesium B) zinc
C) chromium D) iron E) nickel
Answer: A Diff: 5
Page Ref: Sec. 4.4
35) One method for removal of metal ions from a solution is to convert the metal to its elemental form so it can be filtered out as a solid. Which metal can be used to remove aluminum ions from solution?
A) zinc B) cobalt C) lead D) copper
E) none of these
Answer: E Diff: 3
Page Ref: Sec. 4.4