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Unit 9A review- solutions & solubility

Total questions: 59

Worksheet time: 30mins

Name
Class
Date
1.
Stirring the solution increases or decreases the solubility?
a)
increases
b)
decreases
2.

Which will dissolve faster crushed table salt or crystal of table salt?

a)

crushed table salt

b)

crystal of table salt

3.

What combination would dissolve a solid solute the fastest?

a)

high temperature, no stirring

b)

no heat, no stirring

c)

sugar cube, no heat

d)

high temperature, stirring

4.

What would dissolve most slowly?

a)

Large crystals in stirred water

b)

Large crystals in unstirred water

c)

Small crystals in stirred water

d)

Small crystals in unstirred water

5.

Which of the following does not affect solubility of solutes?

a)

Temperture

b)

Color

c)

Size particles

d)

Kind of solute

6.

Why do sugar particles dissolve faster in hot water?

a)

water particles move slower at higher temperatures

b)

water particles move faster at higher temperatures

c)

water particles settle down

d)

water particles stay on top

7.

How does particle size affect solubility?

a)

bigger particles dissolve faster

b)

smaller particles can occupy the space in water faster

c)

bigger particles spread faster than smaller particles

8.

What are the factors that affect solubility?

a)

rate of stirring

b)

particle size

c)

temperature

d)

all of these

9.

Which factor affecting solubility is shown in the picture?

a)

temperature

b)

height

c)

stirring

d)

particle size

10.

When a gas dissolved is in a liquid mixture, an increase in temperature means...

a)
increase in solubility
b)
decrease in solubility
11.

When a solid dissolves in a liquid, an increase in temperature means...

a)
increase in solubility
b)
decrease in solubility
12.

All Common Salts (Na,Li,Ca,Ba,K)

a)

Soluble

b)

Insoluble

13.

Group 1

a)

Soluble

b)

Insoluble

14.

Acetates (CH3COO-) (CH3CO2)

a)

Soluble

b)

Insoluble

15.

Nitrates (NO3-)

a)

Soluble

b)

Insoluble

16.

Ammonium (NH4+)

a)

Soluble

b)

Insoluble

17.

Halogens

a)

Soluble No Exceptions

b)

Soluble Except W/ Hg, Ag, Pb

c)

Insoluble at all times

18.

Carbonates and Chromates

a)

Soluble

b)

Insoluble

19.

Oxides/Hydroxides (OH-)

a)

Soluble with no exceptions

b)

Insoluble at all times

c)

Insoluble except with Cl, I, C

d)

Insoluble except with Ca, Ba, Sr

20.

Phosphates (PO43-)

a)

Soluble

b)

Insoluble

21.

Which of the salts is most soluble in water?

a)

AgI 

b)

AgBr 

c)

ZnCO3 

d)

K2SO4

22.

Which compound could form a concentrated solution?

a)

AgBr

b)

AgCl 

c)

Ag2CO3

d)

AgNO3

23.

Which compound, when stirred in water, will not pass through filter paper?

a)

HgCl

b)

MgCrO4

c)

Na3PO4

d)

Na2S

24.

A student observed the following reaction:

  NaCl(aq) + AgNO3(aq) --> NaNO3(aq) + AgCl(s)

After the products were filtered, which substance remained on the filter paper?

a)

NaCl 

b)

AgNO3

c)

NaNO3 

d)

AgCl

25.

Chlorates (ClO3-)

a)

Soluble

b)

Insoluble

26.

Sulfides

a)

Soluble

b)

Soluble except with group 1 ions and NH4+

c)

Insoluble

d)

Insoluble except with group 1 ions and NH4+

27.

Sulfates (SO42-)

a)

Soluble

b)

Insoluble

c)

Insoluble Except With Halogens

d)

Soluble Except Ca, Ba, Sr, Ag, Pb

28.
How many grams of K2Cr2O7, are soluble in 100 g of water at 95 ºC?
a)
83 grams
b)
75 grams
c)
40 grams
d)
12 grams
29.

25 grams of NaCl are dissolved in 100 mL of water at 60 C. How many more grams need to be dissolved for the solution to be saturated?

a)

13 grams

b)

25 grams

c)

6 grams

d)

38 grams

30.
Which substance is MOST soluble at 0 ºC?
a)
KI
b)
NaNO3
c)
NaCl
d)
Ce2(SO4)3
31.
Which solute is the least soluble at 90 ⁰C?
a)
SO2
b)
KClO3
c)
KI
d)
HCl
32.
Which of these solutes does not increase in solubility as temperature rises?
a)
NH3
b)
NaNO3
c)
KNO3
d)
NaCl
33.
What conclusion can be made using this solubility curve?
a)
Decreasing temperatures always increases solubility 
b)
Increasing temperatures always increases solubility
c)
Increasing temperatures usually increases solubility
d)
Temperature has no affect on solubility
34.

The substance that does the dissolving

a)

Solute

b)

Solvent

c)

Solution

d)

Miscibility

35.

What does it mean to be an unsaturated solution?

a)

A solution with more solute than solvent

b)

A solution with less than the maximum amount of solute

c)

A solution with the perfect balance of solutes and solvents

d)

A solution with extra solute sitting at the bottom of the solvent

36.

Which of these solutes must be a gas?

a)

HCl

b)
NaNO3
c)
KNO3
d)
NaCl
37.
What is the concentration, in percent by mass, of 0.62 g of solute in 45.0 g of solution?
a)
0.014 %
b)
1.4 %
c)
0.13%
38.

What is the molarity of 6 mole of hydrochloric acid in 3 L of water. 

a)

2

b)
1
c)
6
d)
9
39.
How many moles of NaCl are present in a solution with a molarity of 8.59M and 125 mL of solution?
a)
1.07 gram
b)
62.7 mol
c)
1.07 mol
d)
62.7 grams
40.
Molarity is measured in
a)
moles per kg
b)
mols per L
c)
moles per kJ
d)
moles per mL
41.
The ___ is the thing being dissolved
a)
solute
b)
solvent
42.

How many liters would you need to make a 1 M solution if you have 4 mol of Sodium Hydroxide? 

a)
2
b)
3
c)
4
d)
6 
43.
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
44.

What is the concentration of a solution in parts per million if 0.02 grams of NaCl is dissolved in 1000 grams of water?

a)

2 ppm

b)

20 ppm

c)

200 pm

d)

0.2 ppm

45.

Which unit is not used to express the concentration of a solution?

a)

mol/L (M)

b)

percent

c)

ppm

d)

grams

46.

What is the concentration of solution (in ppm) made up of 0.005 grams of solute in 350 grams of solution?

a)

14.3 ppm

b)

12.1 ppm

c)

1.4 ppm

d)

9.8 ppm

47.

If you had four solutions of sweet tea, which would be the sweetest based on its concentration?

a)

1.5 M

b)

0.5 M

c)

2.4 M

d)

0.08 M

48.

A solution is made from 7 grams of solute dissolved in 1450 grams of solvent. What is the concentration of this solution in ppm?

a)

4,804.4 ppm

b)

4,827.6 ppm

c)

4,851.0 ppm

d)

4,790.0 ppm

49.

___________ refers to the amount of solute dissolved in a given amount per volume of solution

a)

Concentration

b)

Dilution

c)

Precipitation

d)

None of the above

50.

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 %

51.
True or False? The higher the concentration of a solution the less solutes it has in it.
a)
True
b)
False
52.
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
53.

As you remove solvent (evaporate the water) from the solution, the concentration (M) will...

a)

increase

b)

decrease

c)

stay the same

54.

As you add more solute to the solution, the concentration of the solution will...

a)

increase

b)

decrease

c)

stay the same

55.

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

a)

14.7 %

b)

5.14 %

c)

13.4 %

d)

8.47 %

e)

11.8 %

56.

By definition a solution is a ____________ mixture that consists of a solvent and solute.

a)

homogeneous

b)

heterogeneous

c)

colloid

d)

solid

57.

What is the concentration, in ppm, of a solution made with 18.5 g of NaCl in 125,000.0 g of solution?

a)

0.0148

b)

0.000148

c)

148 ppm

d)

2,312,500

58.
What mass of solute is needed to make 75.0 g of a 3.4% solution?
a)
2.55 g
b)
22 g
c)
0.05 g
59.
How many moles of NaCl are present in a solution with a molarity of 8.59M and 125 mL of solution?
a)
1.07 gram
b)
62.7 mol
c)
1.07 mol
d)
62.7 grams

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