

1.

Sugar
in water is an example of which solutesolvent combination? a.  gasliquid  c.  solidliquid  b.  liquidliquid  d.  liquidsolid     


2.

Which
of the following expresses concentration? a.  molality  c.  percent concentration by mass  b.  molarity  d.  all of the
above     


3.

Which
of the following is expressed in grams of solute instead of moles of solute? a.  molality  c.  neither a nor
b  b.  molarity  d.  a and
b     


4.

What
is the molarity of a solution that contains 0.202 mol KCl in 7.98 L solution? a.  0.0132
M  c.  0.459
M  b.  0.0253
M  d.  1.363
M     


5.

What
is the molality of a solution that contains 5.10 mol KNO_{3} in 4.47 kg
water? a.  0.315
m  c.  1.02
m  b.  0.779 m  d.  1.14 m     


6.

What
is the molarity of a solution that contains 125 g NaCl in 4.00 L solution? a.  0.535
M  c.  8.56
M  b.  2.14
M  d.  31.3
M     


7.

What
is the molality of a solution that contains 31.0 g HCl in 5.00 kg water? a.  0.062
m  c.  0.170
m  b.  0.425 m  d.  15.5 m     


8.

How
many moles of HCl are present in 0.70 L of a 0.33 M HCl solution? a.  0.23
mol  c.  0.38
mol  b.  0.28
mol  d.  0.47
mol     


9.

The
concentration of a water solution of NaCl is 2.48 m, and it contains 806 g of water. How much
NaCl is in the solution? a.  2.00 g  c.  117 g  b.  89.3
g  d.  224
g     


10.

An
NaOH solution contains 1.90 mol of NaOH, and its concentration is 0.555 M. What is its
volume? a.  0.623
L  c.  1.05
L  b.  0.911
L  d.  3.42
L     


11.

What
mass of water must be used to make a 1.35 m solution that contains 8.20 mol of
NaOH? a.  6.07
kg  c.  11.1
kg  b.  7.44
kg  d.  14.5
kg     


12.

How
many milliliters water are needed to make a 0.171 M solution that contains 1.00 g of
NaCl? a.  100
mL  c.  171
mL  b.  1000
mL  d.  17.1
mL     


13.

(mols
of solute/L of solution) is defined as a.  molality  c.  percent (m/v)  b.  molarity  d.  percent
(v/v)     


14.

(mL
of solute/mL of solution) x 100 is defined as a.  molality  c.  percent (m/v)  b.  molarity  d.  percent
(v/v)     


15.

What
is the percent (v/v) of 2.4 mL of acetone in 30.0 mL of water? a.  0.080
%  c.  72
%  b.  8.0
%  d.  13
%     


16.

How
many mL of 18.0 M sulfuric acid would you need to make 750. mL of 0.500 M sulfuric acid
solution? a.  375
mL  c.  19
mL  b.  27.0
mL  d.  none of the
above     


17.

What
equation do you use for dilutions? a.  mols solute/L of solution  c.  C_{1}V_{1} =
C_{2}V_{2}  b.  C_{1}/V_{1} =
C_{2}/V_{2}  d.  g of solute/mL
of solution     


18.

How
many grams of potassium sulfate do you need to make 1.20 L of a 25.0 % (m/v)
solution? a.  0.300 g
 c.  300.0
g  b.  30.0 g
 d.  20.8
g     


19.

A
solution contains 2.7 g of copper (II) sulfate in 75.0 mL. What is the percent (m/v) of the
solution? a.  0.36
%  c.  3.6
%  b.  3600
%  d.  none of the
above     


20.

What
is the molarity of a 20. % (m/v) solution of calcium chloride? a.  0.56
M  c.  2.6
M  b.  1.8
M  d.  none of the
above     


21.

What
is the percent (m/v) of 0.669 mols of magnesium hydroxide in 1.75 L of solution? a.  1.58
%  c.  2.23
%  b.  38.2
%  d.  none of the
above     


22.

How
many mL’s of 12.0 M HCl do you need to make 1.50 L of 3.20 % (m/v) HCl
solution? a.  0.110
mL  c.  110.
mL  b.  0.400
mL  d.  400.
mL     


23.

500.0
mL of a 25.4 % (v/v) solution of ethanol and water has an unknown amount of ethanol, what is the
volume of the ethanol in mL? a.  19.7 mL  c.  254 mL  b.  12.7
mL  d.  127
mL     


24.

How
many grams of Grape KoolAid would you need to make 40.0 mL of a 0.750 % (m/v) solution? (molar mass
of grape = 7.50 g/mol) a.  0.0563 g  c.  2.25 g  b.  30.0
g  d.  0.300
g     

Problem


25.

What
is the molarity of a solution of sucrose, C_{12}H_{22}O_{11}, that contains
125 g of sucrose in 3.50 L of solution?


26.

How
many grams of NaC_{2}H_{3}O_{2} are needed to prepare 350. mL of a 2.75 M
solution?


27.

What
is the molarity of 235 g of potassium carbonate dissolved in 1750 mL of solution?


28.

What
is the percent (m/v) of 3.00 mols of calcium perchlorate in 1.35 L of solution?


29.

How
many mL’s of 13.8 M HNO_{3} do you need to make 350.0 mL of 1.75 M HNO_{3}
solution?


30.

If
you use 15.0 mL of 12.0 M HCl and dilute it to 750 mL, what is the final concentration
in % (m/v)?
