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Concentrations of Solutions

Total questions: 24

Worksheet time: 20mins

Name
Class
Date
1.

28g of CaCl was dissolved in 0.4 dm3 of water.

Calculate the concentration of the solution with the correct units.

a)

70 g

b)

70 g/cm3

c)

70 g/dm3

d)

70 dm3

2.

1 dm3 is equal to which.

a)

100 cm3

b)

1 L

c)

1000 g

d)

10 cm3

3.

How do you decrease the concentration of a solution. Choose 2 options

a)

add more solvent

b)

add more solute

c)

remove solute

d)

add more water

4.

What term do we use to describe a less concentrated solution?

a)

Dilute

b)

Volume

c)

Aqueous

d)

Solvent

5.

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%

6.

What is the concentration, in percent by volume, of 8 mL of solute in 500 mL of solution?

a)

0.58%

b)

0.0058%

c)

5.8%

d)

1.6%

7.

The substance that is present in a greater amount is known as the

a)

Colloid

b)

Solute

c)

Solvent

d)

Solution

8.

Two liquids that stay mixed together in any proportion are known as

a)

Insoluble

b)

Saturated

c)

Miscible

d)

Immiscible

9.

When calculating molarity, the amount of solute must be in what unit?

a)

mililiters

b)

liters

c)

grams

d)

moles

10.

What is the molarity of a solution of HNO3 that contains 0.500 mol of HNO3 and 250 ml of water?

a)

0.002 M

b)

0.5 M

c)

2 M

d)

500 M

11.

How many liters of water would be needed to make a 3.5 M solution salt of water if you started with 5.0 moles of NaCl?

a)

0.700 L

b)

1.43 L

c)

8.50 L

d)

17.5 L

12.

You need to make 12.0 L of a 1.7 M solution of sodium bicarbonate, how many moles of sodium bicarbonate would you need for this solution?

a)

0.142 moles NaHCO3

b)

7.96 moles NaHCO3

c)

13.7 moles NaHCO3

d)

20.4 moles NaHCO3

13.

If 30.0 ml of a 4.25 M solution of NaOH is diluted to a final volume of 250.0 ml, what is the new molarity of this solution?

a)

35.4 M

b)

4.25 M

c)

0.51 M

d)

0.02 M

14.

True or False - Solutions can be solids, liquids, or gaseous

a)

True

b)

False

15.
What is a solute?
a)
The substance that does the dissolving in a solution.
b)
The substance that is dissolved into the solution.
c)
The mixing of different substances.
d)
The process in which neutral molecules lose or gain electrons
16.
A solution that can hold more solute  is called
a)
saturated
b)
supersaturated
c)
unsaturated
d)
insoluble
17.

When no more solute dissolves the solution is _________

a)

supersaturated

b)

unsaturated

c)

saturated

d)

supercalifragilisticexpialidocious

18.

The substance being dissolved is called the ________

a)

solvent

b)

solid

c)

solute

d)

solvate

19.
A solution that has more solute than it can hold is called
a)
saturated
b)
supersaturated
c)
unsaturated 
d)
suspension
20.
Contains the maximum amount of dissolved solute
a)
unsaturated solution
b)
supersaturated solution
c)
saturated solution
21.
Which technique could increase or speed up the rate of dissolving?
a)
Allowing the mixture to settle
b)
Stirring the mixture
c)
Adding more powder
d)
Adding more water
22.
Diluting a solution reduces the total number of moles per liter of solution.
a)
True
b)
False
23.
Moles of solute= Molarity x Volume
a)
TRUE
b)
FALSE
24.
The unit of measurement for molarity is
a)
molal
b)
molar
c)
moles
d)
molat