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Molarity and Basic Dilutions

Total questions: 22

Worksheet time: 1hrs 2mins

Name
Class
Date
1.

True or False? The higher the concentration of a solution the less solute it has in it.

a)

True

b)

False

2.
What is the molarity of a solution made by adding 1.565 moles of PbNO3 to 500 mL?
a)
300. M
b)
31.3 M
c)
3.13 M
d)
1.56 M
3.
Molarity is measured in
a)
moles per kg
b)
mols per L
c)
moles per kJ
d)
moles per mL
4.
What is the molarity in 650. ml of solution containing 63 grams of sodium chloride?
a)
2.4 M
b)
0.86 M
c)
1.7 M
d)
0.54 M
5.
Determine the molarity of 2.25 mole of sulfuric acid, H2SO4, dissolved in 725 mL of solution.
a)
322.2 M
b)
3.1 M
c)
0.32 M
d)
2.25 M
6.
The ___ is the thing being dissolved
a)
solute
b)
solvent
7.
What does the solute dissolve in?
a)
solvent
b)
mixture
c)
solute
8.
How many moles are needed to make 2.5 L of a 3.8 M solution? 
a)
9.5 mol
b)
0.66 mol
c)
1.5 mol
d)
15 mol
9.
How many liters of 0.88 M solution can be made with .968 moles of lithium fluoride? 
a)
0.87 L
b)
29 L
c)
1.1 L
d)
0.46 L
10.

How many grams of iron (III) bromide are required to make 2.25 L of 1.45 M solution?

a)

3.26 moles

b)

296 g

c)

965.7 g

d)

96.3 moles

11.
A solution with a low amount of solute
a)
concentrated
b)
supersaturated
c)
saturated
d)
diluted
12.
A solution with a high amount of solute
a)
concentrated
b)
supersaturated
c)
saturated
d)
diluted
13.
Which is an example of a solute?
a)
Egg whites
b)
Sugar
c)
Water
d)
Acetone
14.
What is the molarity of 4 g of NaCl (MM=58.45) in 3,800 mL of solution?
a)
0.018 M
b)
0.0011 M
c)
1.052 M
d)
0.062 M
15.
Which sweet tea would you expect to taste the sweetest?
a)
1M
b)
3M
c)
3.1M
d)
2.5M
16.

You need to make 200 mL of a 0.20 M aqueous solution of sodium chloride. The only available solution is 1.0 M. Determine how to make the needed dilution.

a)

Add 160 mL of water to 40 mL of the 1.0 M solution

b)

Add 160 grams of water to the 1.0 M solution

c)

Add 40 mL of water to 160 mL of the 1.0 M solution

d)

the experiment cannot be conducted with the materials provided

17.

A dilution is when

a)

solute is added to the volume of stock solution

b)

water is added to the volume of stock solution

c)

solute is removed from the volume of stock solution

d)

water is removed from the volume of stock solution

18.

What volume, in milliliters, of 10.0 M NaOH is needed to prepare 300 mL of 2.00 M NaOH by dilution?

a)

0.067 mL

b)

60.0 mL

c)

100 mL

d)

125 mL

19.

If 0.775 L of 1.00 M NaOH is diluted to 1.00 L, the resulting solution contains

a)

0.225 mol NaOH

b)

0.775 mol NaOH

c)

1.25 mol NaOH

d)

2.45 mol NaOH

20.

Calculate the volume of a 5M solution that contains 10 moles of NaOH

a)

0.5 L

b)

1 L

c)

2 L

d)

4 L

21.

How many milliliters of 0.120 M HCl are needed to compeltely neutralize 50.0 mL of 0.101 M Ba(OH)2 solution?

a)

25.6 mL

b)

84.2 mL

c)

70.5 mL

d)

45.8 mL

22.

If 42.7 mL of 0.208 M HCl solution is needed to neutralize a solution of Ca(OH)2, how many grams of Ca(OH)2 must be in the solution?

a)

1.805 g Ca(OH)2

b)

2.020 g Ca(OH)2

c)

0.329 g Ca(OH)2

d)

0.746 g Ca(OH)2

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