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Chemistry 3

Total questions: 55

Worksheet time: 3hrs 16mins

Name
Class
Date
1.

Something that gets dissolved is a

a)

solute

b)

solution

c)

science

2.

Something that dissolves stuff is called a

a)

Option 1

b)

solvent

c)

solute

3.

A water-based solution is also known as an

a)

orange solution

b)

aqueous solution

c)

plot solution

4.

Water dissolves __________ well.

a)

polar substances (like sugar)

b)

nonpolar substances (like oil)

c)

bricks

5.

Water doesn't dissolve __________ well.

a)

polar substances (like sugar)

b)

nonpolar substances (like oil)

c)

ice

6.

Loose ions that carry charge well (like in Gatorade) are called

a)

Powerade

b)

aqueous solutions

c)

electrolytes

7.

__________ electrolytes break apart completely and conduct electricity very well.

a)

Strong

b)

Weak

c)

Acid

8.

__________ electrolytes only break apart partly and conduct electricity a little bit.

a)

Strong

b)

Weak

c)

Acid

9.

Things that don't conduct electricity at all in a solution are called_______________.

a)

acid

b)

science

c)

nonelectrolytes

10.

A solution is also known as a...

a)

homogeneous compound

b)

homogeneous mixture

c)

heterogeneous mixture

d)

heterogeneous compound

11.

The ___ does the dissolving, while the ____ gets dissolved.

a)

solvent, solute

b)

solute, solvent

c)

solute, solution

d)

solution, solute

12.

There is always more ____ than _____.

a)

solute, solvent

b)

solvent, solute

c)

solvent, solution

d)

solute, solution

13.
A solution is a ________ mixture. 
a)
heterogeneous 
b)
homogeneous 
c)
dumb 
d)
mixed 
14.
When one of the parts of the solution is water we call it _________. 
a)
water stuff 
b)
water mixture 
c)
aqua-man
d)
aqueous 
15.
What is it about the water molecule that makes it a great solvent?
a)
water demonstrates polarity; a partial charge on each side of the molecule
b)
due to its molecular formula
c)
it has a liner molecular shape
d)
due to it's non-polar molecular structure
16.
What is this process called?
a)
Evaporating
b)
Distiilation
c)
Filtration
d)
Decanting
17.

Which atom of a water molecule has a partial negative charge? (HINT: think about which atom is more electronegative)

a)

H

b)

O

18.

What happens when NaCl (s) is dissolved in water?

a)

Cl - ions are attracted to the oxygen atoms in water

b)

Na + ions are attracted to the oxygen atoms in water

c)

Na + ions are attracted to the hydrogen atoms in water

d)

no attractions are involved

19.

(a)   is a process of recovering a salt (solute) from a mixture by evaporating off the water.

20.

Concentration is

a)

the amount of solute in the solvent

b)

the amount of solvent in the solute

c)

density

d)

particle size

21.

Which solution is more concentrated?

Solution 1:

500 mL of water

100 g of salt


Solution 2:

500 mL of water

90 g of salt

a)

Solution 1

b)

Solution 2

c)

They have the same concentration

d)

I have no idea

22.

In order to dilute a solution, you need to

a)

add more of the solid

b)

add more water

c)

find the mass

d)

find the volume

23.

Which solution is more diluted?

Solution 1:

1000 mL of water

60g of salt


Solution 2:

500 mL of water

60 g of salt

a)

Not enough information to tell

b)

Solution 1

c)

Solution 2

d)

They are equally diluted

24.

Calculate the mass percent of solution, if there is 100 g of sugar and 400 g of water

a)

30

b)

25

c)

20

d)

15

25.
How many liters would you need to make a 1 M solution if you have 6 mol of Sodium Hydroxide? 
a)
2
b)
3
c)
4
d)
6 
26.
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
27.
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
28.

Molality (m) = moles of solute / _________________________.

a)

kilogram of solvent

b)

kiloliter of solvent

c)

kilometer of solvent

d)

ounces of solvent

29.

What is the molality of a solution made by dissolving 2 moles of NaOH in 400 grams of water?

a)

5 mol/kg. solvent

b)

4 mol/kg solvent

c)

3 mol/kg. solvent

d)

2.5 moles /kg solvent

30.

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

31.
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
32.
Calculate mol fraction of H2O in 1.33 molal NaOH solution.
a)
0.56
b)
0.76
c)
0.98
d)
0.84
33.
What is the molarity of 4.0 g of NaCl (Molar mass=58.45) in 3,800 mL of solution?
a)
0.018 M
b)
0.001M
c)
1.052 M
d)
0.062 M
34.
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
35.

Which of the following is the Dilution Formula?

a)

V1M1 = V2M2

b)

M = m/V

c)

V = mT

d)

PV = nRT

36.

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

37.

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

38.

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

39.
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
40.
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
41.

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

42.

If I dilute 250 mL of 0.10 M lithium acetate solution to a volume of 750 mL, what will the concentration of this solution be?

a)

2 M

b)

0.02 M

c)

0.033 M

d)

0.08 M

43.
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
44.

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

45.
How many grams of H3PO4 are in 175 mL of a 3.5 M solution of H3PO4?
a)
60
b)
4.9
c)
612
d)
20
46.
How many moles of BaCl2 are formed in the neutralization of 393 mL of 0.171 M Ba(OH)2 with aqueous HCl?
a)
1.15
b)
0.0672
c)
0.0336
d)
2.30
47.
What mass in (g) of AgBr is formed when 35.5 mL of 0.184 M AgNO3 is treated with an excess of aqueous hydrobromic acid?
a)
53.6
b)
1.44
c)
1.23
d)
34.5
48.

How many moles would be in 85mL of 0.75M KOH?

a)

113.3 mol

b)

1.13 mol

c)

.113mol

d)

0.06375mol

e)

63.75mol

49.

How many moles of HNO3 would be needed to react with 85mL of 0.75M KOH?

a)

113.3 mol

b)

1.13 mol

c)

.113mol

d)

0.06375mol

e)

63.75mol

50.

How many mL of 0.5M HNO3 would be needed to react with 85mL of 0.75M KOH?

a)

127.5mL

b)

0.1275mL

c)

31.9mL

d)

0.031875mL

51.

How many grams of water could form in this reaction 85mL of 0.75M KOH?

a)

1.15g

b)

282g

c)

31.9g

d)

113.g

52.

What would the molarity of the solution be if 0.475 mol of KNO3 were formed in this reaction and the final volume of the solution was 595mL

a)

0.798M

b)

1.25M

c)

282.6M

d)

7.98x10-4M

53.

Molarity is:

a)

moles per liter of solution

b)

written with a unit of M

c)

calculated by dividing the moles of a substance by the liters of solvent

d)

all of the above

54.

To convert liters of a solution to moles, one should:

a)

divide by the molarity

b)

multiply by the molarity

c)

multiply by the molar mass

d)

divide by the molar mass then multiply by the speed of light squared

55.

To convert mL to L, one should:

a)

divide by 1000

b)

multiply by 1000

c)

divide by 100

d)

multiply by 100

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