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Solutions Review

Total questions: 58

Worksheet time: 3hrs 3mins

Name
Class
Date
1.

How much KNO3 solute is saturated at 40 degrees?

a)

75

b)

55

c)

65

d)

85

2.

How much C12H22O11 solute is saturated at 40 degrees?

a)

240

b)

220

c)

230

d)

250

3.

How much Ce2(SO4)3 solute is saturated at 80 degrees?

a)

20

b)

15

c)

30

d)

2

4.

How much NaBr solute is saturated at 70 degrees?

a)

110

b)

120

c)

130

d)

140

5.

Which solute is MOST likely a gas?

a)

KNO3

b)

NaNO3

c)

KCl

d)

Ce2(SO4)3

6.

At what temperature can you fully dissolve 140g of NaNO3?

a)

62

b)

73

c)

81

d)

You cannot determine this

7.

At what temperature can you fully dissolve 60g of KNO3?

a)

27

b)

30

c)

37

d)

You cannot determine this

8.

At what temperature can you fully dissolve 120g of NaBr?

a)

70

b)

20

c)

100

d)

You cannot determine this

9.

What type of a solution is 60g NaNO3 at 40ºC in 100g H2O?

a)

Saturated

b)

Unsaturated

c)

Supersaturated

10.

What type of a solution is 100g KNO3 at 40ºC in 100g H2O?

a)

Saturated

b)

Unsaturated

c)

Supersaturated

11.

What type of a solution is 260g sugar at 50ºC in 100g H2O?

a)

Saturated

b)

Unsaturated

c)

Supersaturated

12.

What type of a solution is 25g NaCl at 70ºC in 100g H2O?

a)

Saturated

b)

Unsaturated

c)

Supersaturated

13.

What type of a solution is 55g KCl at 70ºC in 100g H2O?

a)

Saturated

b)

Unsaturated

c)

Supersaturated

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.
How many grams of solute are dissolved in 125.0 mL of 5.00 M NaCl (MM = 58.45)?
a)
0.625 g NaCl
b)
625 g NaCl
c)
36.5 g NaCl
d)
0.04 mol NaCl
16.
Find the molarity of 186.55 g of sucrose, C12H22O11 (MM = 342) in 250 mL of water.
a)
2.18 M
b)
0.746 M
c)
1.18 M
d)
0.545 M
17.
How many moles of NaCl are present in a solution with a molarity of 8.59 M and a volume of 125 mL?
a)
1074 mol
b)
0.069 mol
c)
1.07 mol
d)
62.7 mol
18.
True or False? The higher the concentration of a solution the less solutes it has in it.
a)
True
b)
False
19.
How many grams of AgNO3 (MM = 169.87) are needed to prepare 0.125M solution in 250 mL of water? 
a)
.03g
b)
0.5g
c)
5.3g
d)
84.9g
20.
What is the molarity of a solution made by diluting 26.5 mL of 6.00M HNO3 to a volume of 250 mL?
a)
15.9 M
b)
0.636 M
c)
0.642 M
d)
1.59 M
21.
How many mL of 10.8M HCl are required to make 100.0 mL of 3.00M acid?
a)
27.8 mL
b)
27.78 mL
c)
2.8 mL
d)
278 mL
22.
Calculate the molarity of the following solution:  1.0 mole of KCl in 750.0 mL of solution.
a)
0.750 M
b)
99 M
c)
1.3 M
d)
2.0 M
23.
What volume of 1.50 M KBr can be made from 15.6 mL of concentrated KBr with a molarity of 9.65 M?
a)
150. mL
b)
151 mL
c)
1.00 L
d)
100. mL
24.
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
25.
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
26.

Molar mass of NaOH is ______________________

a)

40 grams/mol

b)

50 grams/mol

c)

45 grams/mol

d)

38 grams/nol

27.

Molarity is measured in _____.

a)

moles per g.

b)

mols per L.

c)

moles per mm.

d)

moles per mL.

28.
How many moles of NaCl are present in a solution with a molarity of 8.59 M and a volume of 125 mL?
a)
1074 mol
b)
0.069 mol
c)
1.07 mol
d)
62.7 mol
29.
Total number of mol fraction for all component in the solution is equal to
a)
1.0
b)
0.95
c)
0.50
d)
2.0
30.
Determine the mole fraction of SOLUTE in a solution with 2 moles of acetic acid (C2H4O2 / vinegar) and 2 moles of water.
a)
.5
b)
.25
c)
1
d)
.2
31.

suppose a hydrochloric acid solution contains 36 g of HCl and 64 g of H2O.what is the mole fraction of HCl?

a)

0.78

b)

0.99

c)

0.22

d)

3.6

32.

the number of moles of solute or solvent in a solution divided by the total number of moles of solute and solvent is known as

a)

molarity

b)

mole fraction

c)

molality

d)

percent by mass

33.
Calculate the mole fraction of benzene (C6H6) in a solution of 46.8 g benzene and 36.8 g of toluene (C7H8).
a)
0.4
b)
0.6
c)
0.7
d)
0.5
34.
What is the mole fraction of MgF2 in a solution  that has 0.321 mol of MgF2 dissolved in 4.44 mol of water?
a)
0.0674
b)
0.0722
c)
1.425
35.
What is the mole fraction of ethanol when 0.504 mol of ethanol are mixed with 4.06 mol of water?
a)
0.110
b)
0.124
c)
0.097
36.
Calculate the mole fraction of toluene in a solution of 46.8 g benzene (C6H6) and 36.8 g of toluene (C7H8).
a)
0.404
b)
0.596
c)
0.712
d)
0.312
37.

Which of the following is the Dilution Formula?

a)

V1M1 = V2M2

b)

M = m/V

c)

V = mT

d)

PV = nRT

38.

A dilution is when

a)

solute is added to the volume of solution

b)

water is added to the volume of solution

c)

solute is removed from the volume of solution

d)

water is removed from the volume of solution

39.

What volume, in milliliters, of 10.0 M NaOH is needed to prepare 300.0 mL of 2.00 M NaOH by dilution?

a)

0.067 mL

b)

60.0 mL

c)

100 mL

d)

125 mL

40.

What is the molarity of a solution made by diluting 26.5 mL of 6.00M HNO3 to a volume of 250.0 mL?

a)

15.9 M

b)

0.636 M

c)

0.642 M

d)

1.59 M

41.
What volume of 1.50 M KBr can be made from 15.6 mL of concentrated KBr with a molarity of 9.65 M?
a)
150. mL
b)
151 mL
c)
1.00 L
d)
100. mL
42.

If I have 340.0 mL of a 0.500 M NaBr solution, what will the concentration be if I add 560.0 mL more water to it? (Remember to use the total new volume)

a)

.188 M

b)

3.78 M

c)

.389 M

d)

1.76 M

43.

125.0 mL of 2.00 M calcium hydroxide solution is diluted to a concentration of 1.50 M. How many mL of water was added to the original volume?

a)

167 mL

b)

42.0 mL

c)

93.8 mL

d)

0.0240 mL

44.

What is the percent by mass of a solution made by dissolving 20.0 g of NaCl into 180.0 g of water?

a)

10.0 %

b)

11.1 %

c)

80.0 %

d)

20.0 %

45.

What is the percent concentration of sugar in pink lemonade if 28 g of sugar is added to 209 g of water?

a)

14.7 %

b)

5.14 %

c)

13.4 %

d)

8.47 %

e)

11.8 %

46.

The ___ is the part of the solution being dissolved

a)

solute

b)

solvent

47.

What is the percent by mass of a solution made by dissolving 10.0 g of NaCl into 180.0 g of water?

a)

5.26 %

b)

5.56 %

c)

180.0 %

d)

20.0 %

48.

What is the percent by mass of a solution containing 56.5 g of salt in 500 g of water?

a)

11.3 %

b)

5.56%

c)

8.85%

d)

10.2 %

49.

What type of instrument should you use to measure the water when making a stock solution?

a)

Graduated cylinder

b)

Beaker

c)

Volumetric flask

d)

Pipet

50.

If you are making a dilution, the concentration shown on the stock solution can be described as the

a)

M1

b)

V1

c)

M2

d)

V2

51.

If some of your solute gets stuck to the funnel, what should you use to move the solute into the volumetric flask?

a)

weigh boat

b)

wash bottle

c)

pipet

d)

spatula

52.

How far should you fill a volumetric flask full of water?

a)

To the top

b)

To the calibration line

c)

To the bottom of the neck

d)

Half way

53.

Reorder the following steps to making a solution into the correct order

a)

Measure out the mass of the solute in a weigh boat

b)

Add the solute to the volumetric flask using a funnel

c)

Fill the volumetric flask halfway with water

d)

Swirl the flask to dissolve the solute

e)

Use a wash bottle/dropper to fill the rest of the flask to the calibration line

1)
2)
3)
4)
5)
54.

If you fill your volumetric flask past the calibration line,

a)

Too bad, you have to make it over again.

b)

It's okay. Just add a little bit more solute

c)

It's okay. Just add a little more water

d)

Drop half of it down the drain and fill it back up to the calibration line

55.

Which of the following formulas would you need to use to make a solution the way we did in lab?

a)

Molarity = moles of solute/liters of solution

b)

Percent composition = grams of solute/ grams of solution

c)

M1V1 = M2V2

56.

You have been asked to prepare 500 mL of a 2.5 M solution of NaOH. How much NaOH should you measure out before adding water?

a)

10g

b)

100g

c)

50g

d)

80g

57.
What does it mean to dilute a solution?
a)
lower the concentration of solute per solvent
b)
increase the concentration of solute per solvent
58.

As we dilute a solution.....

a)

The volume increases and the molarity (M) increases

b)

The volume increases and the molarity (M) decreases

c)

The volume decreases and the molarity (M) increases

d)

The volume decreases and the molarity (M) decreases

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