Solutions Review
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1
Identify these as soluble or insoluble in water:
A) Hg2(NO3)2
B)BaSO4
C)AlPO4
D)AgCl
2
How much water must be added to a 6.4 M
stock sodium sulfate solution to make 200.00 mL
of a 0.30 M solution?
3
A student measures 1.85 grams of sodium
chloride and dissolves them into a 50.00 mL
volumetric flask. What is the molarity of the
solution?
4
Calculate the pH and pOH of a 4.5 M HNO3
solution.
5
What is the concentration of hydrogen ions([H+])
in 0.010 M magnesium hydroxide ?
6
1. What happens to the
solubility of most solids as
the temperature
increases?
A. solubility remains the
same
B. solubility increases
C. solubility decreases
2. Calculate the volume of a
0.250 M solution made
using 10.42 moles of
lithium nitrate.
A. 0.0484 L
B. 41.7 L
C. 3.63x10-3 L
D. 276 L
E. 2.61 L
3. Which of the following must
be measured in order to
calculate the molar
concentration of a solution?
I. The mass of the solute
II. The mass of the solvent
III. The volume of the solution
IV. The volume of the solvent
A.
B.
C.
D.
I and III
I and IV
II and III
II and IV
7
All of the following statements about solutions are
correct EXCEPT:
A.
B.
C.
D.
E.
The solvent is the component that does the dissolving
The solute is the component that gets dissolved
A solution is a heterogeneous mixture
An unsaturated solution can dissolve more solute
A saturated solution has the maximum amount of solute
dissolved in the solvent
8
1. What does it mean when an acid or base is
described as strong? Concentrated? Dilute?
2. List the strong acids. Which bases are strong?
9
Identify these as soluble or insoluble in water:
A) NH4C2H3O2 B)CuOH C)CaCO3 D)K2SO3
Answers 1-7 (8-9 0n next slide)
1.
2.
3.
4.
5.
6.
7.
S, I, I, I
190 mL
0.633 M
pH= -0.653, pOH= 14.653
5.00 E -13 M
B, B, A
C
Answers 8-9
8.
1. Strong acids completely dissociate into ions
in solution. Concentrated means there are
lots of solute particles in solution. Dilute
means there is less solute compared to the
concentrated stock solution.
2. Strong acid:HCl, HClO3, HClO4, HNO3,
H2SO4, HBr, HI Strong Bases: All soluble
hydroxides (OH-)
9. S, I, I, S