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Unit 14 Review- Solutions

Total questions: 40

Worksheet time: 1hrs 12mins

Name
Class
Date
1.
mixture of two or more substances; dissolved particles are spread evenly throughout the mixture
a)
solvent
b)
solute
c)
mixture
d)
solution
2.
What is a substance that is dissolved in another substance? 
a)
solution
b)
solute
c)
solvent
d)
compound
3.
Kool-Aid - Powder, sugar, and water
Identify the solvent 
a)
water
b)
powder
c)
sugar
d)
powder and sugar
4.
Define solubility
a)
how much pressure is in an object has
b)
Surface Area per Temperature
c)
how much solute can dissolve in a solvent
d)
it is a made up word
5.

Which substance is least affected by changes in temperature?

a)

KI

b)

NaCl

c)

KNO3

d)

NH3

6.

Which substance is most affected by changes in temperature?

a)

KI

b)

NaCl

c)

KNO3

d)

NH3

7.
What is a precipitate?
a)
an insoluble reactant formed during a chemical reaction
b)
an insoluble product formed during a chemical reaction
c)
a soluble solvent in a saturated solution
d)
a soluble solute in a saturated solution
8.

Type of mixture that DOESN'T HAVE the same composition in every part.

a)

Homogeneous

b)

Heterogeneous

9.

Type of mixture that has the SAME COMPOSITION in every part.

a)

Homogenous

b)

Heterogeneous

10.
How many L are required to make 3.5 M hydrochloric acid using 1.1 moles? 
a)
3.18 L
b)
0.31 L
c)
3.85 L
d)
4.6 L
11.
What is the molarity of 3 mole of hydrochloric acid in 3 L of water. 
a)
3
b)
1
c)
6
d)
9
12.

A beaker contain 795 mL of 0.35M of Na2SO4 solution. Calculate the mass of Na2SO4.

a)

39.5 g

b)

42.8 g

c)

38.10 g

d)

29.5 g

13.
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
14.
What is the molarity of 4 grams of sodium chloride in 3,800 mL of solution?
a)
0.018 M
b)
0.018 mol
c)
1.052 M
d)
1.052 mol
15.
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
16.

Molarity is measured in _____.

a)

moles per g.

b)

mols per L.

c)

moles per mm.

d)

moles per mL.

17.
Which sweet tea would you expect to taste the sweetest?
a)
1M
b)
3M
c)
3.1M
d)
2.5M
18.

molality is defined as ________________________

a)

the moles of solute per kilogram of solvent

b)

moles of solute per liter of solution

c)

mass of solute/ mass of solution

d)

mass of solute/ mass of solvent X 100

19.

Molality (m) = moles of solute / _________________________.

a)

kilogram of solvent

b)

kiloliter of solvent

c)

kilometer of solvent

d)

ounces of solvent

20.

What is the molality of a solution formed by dissolving 1.2 moles of a solute in 0.800 kg of solvent?

a)

0.67 m

b)

0.96 m

c)

1.5 m

21.

How many kilograms of water are needed to form a 0.01 m solution if 5.1 moles are used?

a)

0.0002 kg

b)

0.051 kg

c)

510 kg

22.

What does "like dissolves like" mean?

a)

polar solvents dissolve in polar solutes

b)

polar solutes dissolve in polar solvents

c)

non-polar solvents dissolve in polar solutes

d)

non-polar solutes dissolve in polar solvents

23.

When no more solute dissolves the solution is _________

a)

supersaturated

b)

unsaturated

c)

saturated

d)

supercalifragilisticexpialidocious

24.

Sodium choride, NaCl

a)

Electrolye

b)

Nonelectrolye

25.

Phosphorous trichloride, PCl3

a)

Electrolye

b)

Nonelectrolye

26.

Carbon dioxide, CO2

a)

Electrolye

b)

Nonelectrolye

27.

Nitrogen triiodide, NI3

a)

Electrolye

b)

Nonelectrolye

28.

Magnesium bromide, MgBr2

a)

Electrolye

b)

Nonelectrolye

29.

Sodium sulfate, Na2SO4

a)

Electrolye

b)

Nonelectrolye

30.

Methane, CH4

a)

Electrolye

b)

Nonelectrolye

31.

Potassium phosphate, K3PO4

a)

Electrolye

b)

Nonelectrolye

32.

Sulfur trioxide, SO3

a)

Electrolye

b)

Nonelectrolye

33.

Iron (III) nitrate, Fe(NO3)3

a)

Electrolye

b)

Nonelectrolye

34.

Gold (III) Chloride, AuCl3

a)

Electrolye

b)

Nonelectrolye

35.

Hydrochloric acid, HCl

a)

Electrolyte

b)

Nonelectrolyte

36.

Sulfuric acid, H2SO4

a)

Electrolyte

b)

Nonelectrolyte

37.

Sodium hydroxide, NaOH

a)

Electrolyte

b)

Nonelectrolyte

38.

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 %

39.

What mass of water should be added to 22.0 g of KCl to make 5.50% by mass solution?

a)

400 g

b)

40 g

c)

0.25 g

d)

25 g

40.
True or False? The higher the concentration of a solution the less solutes it has in it.
a)
True
b)
False

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