Exam

Name___________________________________

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
 
1)  Of the species below, only __________ is not an electrolyte. 1) ______
  A)  NaCl
  B)  KOH
  C)  Rb2SO4
  D)  Ar
  E)  HCl

2)  The balanced molecular equation for complete neutralization of H2SO4 by KOH in aqueous solution is __________. 2) ______
  A)  H2SO4 (aq) + 2KOH (aq) 2H2O (l) + K2SO4 (s)
  B)  2H+ (aq) + 2KOH (aq) 2H2O (l) + 2K+ (aq)
  C)  2H+ (aq) + 2OH- (aq) 2H2O (l)
  D)  H2SO4 (aq) + 2KOH (aq) 2H2O (l) + K2SO4 (aq)
  E)  H2SO4 (aq) + 2OH- (aq) 2H2O (l) + SO42- (aq)

3)  Aqueous potassium chloride will react with which one of the following in an exchange (metathesis) reaction? 3) ______
  A)  sodium bromide
  B)  barium nitrate
  C)  lead nitrate
  D)  calcium nitrate
  E)  sodium chloride

4)  The net ionic equation for formation of an aqueous solution of NiI2 accompanied by evolution of CO2 gas via mixing solid NiCO3 and aqueous hydriodic acid is __________. 4) ______
  A)  NiCO3 (s) + 2H+ (aq) H2O (l) + CO2 (g) + Ni2+ (aq)
  B)  NiCO3 (s) + 2HI (aq) 2H2O (l) + CO2 (g) + NiI2 (aq)
  C)  NiCO3 (s) + I- (aq) 2H2O (l) + CO2 (g) + Ni2+ (aq) + HI (aq)
  D)  NiCO3 (s) + 2HI (aq) H2O (l) + CO2 (g) + Ni2+ (aq) + 2I- (aq)
  E)  2NiCO3 (s) + HI (aq) 2H2O (l) + CO2 (g) + 2Ni2+ (aq)

5)  The net ionic equation for formation of an aqueous solution of Al(NO3)3 via mixing solid Al(OH)3 and aqueous nitric acid is __________. 5) ______
  A)  Al(OH)3 (s) + 3H+ (aq) 3H2O (l) + Al3+ (aq)
  B)  Al(OH)3 (s) + 3HNO3 (aq) 3H2O (l) + Al(NO3)3 (aq)
  C)  Al(OH)3 (s) + 3NO3- (aq) 3OH- (aq) + Al(NO3)3 (s)
  D)  Al(OH)3 (s) + 3HNO3 (aq) 3H2O (l) + Al3+ (aq) + NO3- (aq)
  E)  Al(OH)3 (s) + 3NO3- (aq) 3OH- (aq) + Al(NO3)3 (aq)

6)  The net ionic equation for the reaction between aqueous sulfuric acid and aqueous sodium hydroxide is __________. 6) ______
  A)  H+ (aq) + OH- (aq) H2O( l)
  B)  SO42- (aq) + 2Na+ (aq) 2Na+ (aq) + SO42- (aq)
  C)  H+ (aq) + HSO4- (aq) + 2Na+ (aq) + 2OH- (aq) 2H2O (l) + 2Na+ (aq) + SO42- (aq)
  D)  H+ (aq) + HSO4- (aq) + 2OH- (aq) 2H2O (l) + SO42- (aq)
  E)  2H+ (aq) + SO42- (aq) + 2Na+ (aq) + 2OH- (aq) 2H2O (l) + 2Na+ (aq) + SO42- (aq)

7)  In which reaction does the oxidation number of oxygen increase? 7) ______
  A)  HCl (aq) + NaOH (aq) NaCl (aq) + H2O (l)
  B)  2 H2O (l) 2 H2 (g) + O2 (g)
  C)  2 SO2 (g) + O2 (g) 2 SO3 (g)
  D)  Ba(NO3)2 (aq) + K2SO4 (aq) BaSO4 (s) + 2 KNO3 (aq)
  E)  MgO (s) + H2O (l) Mg(OH)2 (s)

8)  In which species does sulfur have the highest oxidation number? 8) ______
  A)  S8 (elemental form of sulfur)
  B)  K2SO4
  C)  H2S
  D)  H2SO3
  E)  SO2

9)  The net ionic equation for the dissolution of zinc metal in aqueous hydrobromic acid is __________. 9) ______
  A)  Zn (s) + 2H+ (aq) Zn2+ (aq) + H2 (g)
  B)  Zn (s) + 2HBr (aq) ZnBr2 (aq) + 2H+ (aq)
  C)  2Zn (s) + H+ (aq) 2Zn2+ (aq) + H2 (g)
  D)  Zn (s) + 2Br- (aq) ZnBr2 (aq)
  E)  Zn (s) + 2HBr (aq) ZnBr2 (s) + 2H+ (aq)

10)  Oxidation is the __________ and reduction is the __________. 10) ______
  A)  loss of oxygen, gain of electrons
  B)  gain of electrons, loss of electrons
  C)  loss of electrons, gain of electrons
  D)  gain of oxygen, loss of mass
  E)  gain of oxygen, loss of electrons

11)  Which one of the following is a correct expression for molarity? 11) ______
  A)  mol solute/mL solvent
  B)  mmol solute/mL solution
  C)  mol solute/L solvent
  D)  μmol solute/L solution
  E)  mol solute/kg solvent

12)  A 0.200 M K2SO4 solution is produced by __________. 12) ______
  A)  dissolving 43.6 g of K2SO4 in water and diluting to a total volume of 250.0 mL
  B)  dilution of 1.00 mL of 250 M K2SO3 to 1.00 L
  C)  diluting 20.0 mL of 5.00 M K2SO4 solution to 500.0 mL
  D)  dilution of 250.0 mL of 1.00 M K2SO4 to 1.00 L
  E)  dissolving 20.2 g of K2SO4 in water and diluting to 250.0 mL, then diluting 25.0 mL of this solution to a total volume of 500.0 mL

13)  What are the respective concentrations (M) of Fe3+ and I- afforded by dissolving 0.200 mol FeI3 in water and diluting to 725 mL? 13) ______
  A)  0.276 and 0.828
  B)  0.828 and 0.276
  C)  0.145 and 0.0483
  D)  0.145 and 0.435
  E)  0.276 and 0.276

14)  Mixing 10.00 mL of an aqueous solution with 10.00 mL of water represents a __________. 14) ______
  A)  twofold dilution
  B)  tenfold dilution
  C)  neutralization
  D)  titration
  E)  crystallization

15)  What volume (mL) of a concentrated solution of sodium hydroxide (6.00 M) must be diluted to 200. mL to make a 1.50 M solution of sodium hydroxide? 15) ______
  A)  0.800
  B)  50.0
  C)  0.0500
  D)  45.0
  E)  800.

16)  Which one of the following substances is produced during the reaction of an acid with a metal hydroxide? 16) ______
  A)  H2O
  B)  H2
  C)  CO2
  D)  O2
  E)  NaOH

17)  A 13.8 mL aliquot of 0.176 M H3PO4 (aq) is to be titrated with 0.110 M NaOH (aq). What volume (mL) of base will it take to reach the equivalence point? 17) ______
  A)  22.1
  B)  7.29
  C)  199
  D)  20.9
  E)  66.2