Name:
Date:
!
Multiple-Choice
!
!
!
AP Chemistry
U1Q2: Solution Chemistry (Multiple Choice)
1. Of the species below, only __________ is not an electrolyte.
a. HCl
b. Rb2SO4
c. Ar
d. KOH
!
MC: ________
!
FR: _________
!
Raw: ________
!
Curve: _______
2. Which one of the following solutions will have the greatest concentration of
hydroxide ions, assuming they all have the same volume?
a. 0.200 M aluminum hydroxide
b. 0.200 M sodium hydroxide
c. 0.100 M ammonia
d. 0.200 M beryllium hydroxide
Ag+(aq) + Cl-(aq) ! AgCl(s)
3. A student mixes dilute AgNO3(aq) with excess NaCl to form AgCl(s), as
represented by the net ionic equation above. Which of the diagrams below best
represents the ions that are present in significant concentrations in the
solution?
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!1
Name:
Date:
!
AP Chemistry
4. When lithium hydroxide and hydrobromic acid (HBr) are mixed, a neutralization
reaction occurs. What are the spectator ions in this reaction?
a. Li+ and Brb. OH- and H+
c. Li+, OH-, H+ and Brd. H+ and Li+
5. Which of the following are nonelectrolytes in water?
!
!
!
!
!
!
!
I: H2
a.
b.
c.
d.
II: C6H12O6
III: NH3
I only
II only
I and II
I, II and III
6. A 2.0 L stock solution of Pb(NO3)2 has a concentration of 1.0 M. You need to use
500.0 mL of this solution for a lab. When you remove 500.0 mL, what is the
concentration of Pb(NO3)2 remaining in the stock solution?
a. 0.25 M
b. 0.5 M
c. 1.0 M
d. 2.0 M
7. A stock solution of hydrochloric acid has a concentration of 6 M. In order to
conduct an accurate titration of a sample of sodium hydroxide, you only need 3
M hydrochloric acid. If the stock solution has a volume of 2.0 L and you want to
make 500.0 mL of 3 M hydrochloric acid, how much of the stock solution will
you need to dilute?
a. 250 mL
b. 500 mL
c. 1000 mL
d. 1.5 L
8. As part of a lab, you are tasked with completing a reaction that produces a
precipitate when one substance is mixed with Calcium Sulfate. You are given
four different compounds that could be used as the other reactant. Of the
compounds below, which would be most likely to form a precipitate?
a. KClO4
b. HCl
c. NH4NO2
d. Mg3(PO3)2
!2
Name:
Date:
AP Chemistry
9. An aqueous solution of an unknown solute is tested with litmus paper and found
to be acidic. The solution is weakly conducting compared with a solution of
CaCl2 of the same concentration. Which of the following substances could the
unknown be?
a. NH4OH
b. HC2H3O2
c. NaCl
d. HCl
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
10.You are set to conduct the titration of an acid with an unknown concentration.
Which of the following solutions would you use to titrate the acidic solution?
a. Na3PO4
b. H2SO4
c. KOH
d. H3PO4
!3
Name:
Date:
!
AP Chemistry
U1Q2: Solution Chemistry (Free Response)
1. A student conducts an experiment to determine the molar mass of an unknown
solid monoprotic acid, HA, where A represents an unknown polyatomic ion, by
titration with 0.10 M NaOH.
a. Write the molecular, ionic and net ionic equation for the reaction
between the acid HA and NaOH
b. The student needed to make 50. mL of the 0.10 M NaOH solution for the
titration. In order to do this, how many mL of a 6.0 M stock NaOH
solution would she need?
c. At the equivalence point in the titration, the student had added 2.48 mL
of NaOH. Based on this information, what is the concentration of the
acid HA if 5.0 mL of acid were used?
d. If the mass of HA used in the experiment was 0.0090 g, what is the molar
mass of the acid HA?
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
!4
Name:
Date:
AP Chemistry
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
________________________________________
!5