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Understanding Solutions and Concentration

Total questions: 67

Worksheet time: 2hrs 41mins

Name
Class
Date
1.

How many grams of KNO3 is saturated at 40 degrees?

a)

75

b)

55

c)

65

d)

85

2.

How many grams of C12H22O11(glucose) is saturated at 40 degrees?

a)

240

b)

220

c)

225

d)

250

3.

Which solute is MOST likely a gas? (a)  

Choose from the below words
KNO3
NaNO3
KCl
Ce2(SO4)
4.

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

(a)   ​

Choose from the below words

62

73

81

330

100
85
5.

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

a)

27

b)

30

c)

37

d)

You cannot determine this

6.

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

(a)  

Choose from the below words

Saturated

Unsaturated

Supersaturated

7.

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

(a)  

Choose from the below words

Saturated

Unsaturated

Supersaturated
8.

Match the following terms with their correct definitions.

a)

solute

1.

A substance that is dissolved in a solution.

b)

solvent

2.

A substance that dissolves a solute to form a solution.

c)

soluble

3.

Having the ability to be dissolved in a solvent.

d)

solubility

4.

The amount of solute that can dissolve in a solvent at a specific temperature.

9.

A solution in which more solute can still be dissolved is called

(a)  

Choose from the below words

soluble

saturated

unsaturated
supersaturated
10.

(a)   is more soluble at 40 degrees Celsius.

Choose from the below words
KNO3
NH4Cl
11.

Which substance is least soluble at 0 ºC?

a)

KI

b)

KNO3

c)

KClO3

d)

Ce2(SO4)3

12.

Which solute does not increase in solubility as temperature rises?

(a)  

Choose from the below words
NH3
NaNO3
KNO3
NaCl
13.

You can make a solution more concentrated by adding more__________.

a)
solute
b)
solvent
c)
water
14.

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

15.

Which solute is the least soluble at 90 ⁰C?

a)
SO2
b)
KClO3
c)
KI
d)
HCl
16.
When 20 grams of KNO3 is dissolved in 100 grams of water at 80 ºC, the solution can be correctly described as:
a)
supersaturated
b)
saturated
c)
unsaturated
17.

When 42 grams of potassium chloride ( KCl), is dissolved in 100 grams of water at 50 ºC, the solution can be correctly described as:

a)

supersaturated

b)

saturated

c)

unsaturated

18.

20 grams of NaCl are dissolved in 100 mL of water at 60 0C. How many more grams need to be dissolved for the solution to be saturated?

a)

15 grams

b)

25 grams

c)

6 grams

d)

38 grams

19.

What does this solubility curve show?

a)

Solubility increases as temperature increases

b)

Solubility decreases as temperature increases

c)

Solubility decreases as concentration increases

d)

Solubility is not affected by temperature

20.

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

21.
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
22.

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

23.

The substance that does the dissolving

a)

Solute

b)

Solvent

c)

Solution

d)

Miscibility

24.

Which of the following will allow for more solute than normal to be dissolved in a solvent?

a)

freezing the solution

b)

shaking the solute

c)

cooling the solution

d)

heating the solution

25.

The most soluble substance at 40 degrees Celcius is

a)

KNO3KNO_3  

b)

NaClNaCl  

c)

Pb(NO3)2Pb\left(NO_3\right)_2  

d)

KClKCl  

26.

How much KCl will dissolve at 80 degrees Celcius?

a)

52 g

b)

50 g

c)

40 g

d)

60 g

27.

At what temperature will NaCl dissolve 40 g?

a)

80°C80\degree C  

b)

90°C90\degree C  

c)

95°C95\degree C  

d)

85°C85\degree C  

28.

What substance will dissolve 75 g at 40°C40\degree C  ?

a)

KNO3KNO_3  

b)

CaCl2CaCl_2  

c)

Pb(NO3)2Pb\left(NO_3\right)_2  

d)

NaNO3NaNO_3  

29.

The least soluble substance at 10 degrees Celcius is

a)

KClO3KClO_3  

b)

Ce2(SO4)3Ce_2\left(SO_4\right)_3  

c)

K2Cr2O7K_2Cr_2O_7  

d)

NaClNaCl  

30.

At approximately what temperature does the solubility of sodium chloride, NaCl, match the solubility of potassium dichromate, K2Cr2O7?

a)

60 ºC

b)

30 ºC

c)

50 ºC

d)

83 ºC

31.
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
32.

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

33.
When 20 grams of potassium chlorate, KClO3, is dissolved in 100 grams of water at 80 ºC, the solution can be correctly described as:
a)
supersaturated
b)
saturated
c)
unsaturated
34.
When 50 grams of KCl is dissolved in 100 grams of water at 50 ºC, the solution can be correctly described as:
a)
supersaturated
b)
unsaturated
c)
saturated
35.

John dissolves 54 grams of a solute in a solution he has gently heated near boiling. After a couple of hours he checks the temperature and finds that only 48 grams of solute should dissolve at the present temperature. The solution appears normal otherwise. What type of solution has John made?

a)

unsaturated

b)

saturated

c)

super saturated

d)

unable to determine

36.
When no more sugar will dissolve in a glass of water, the solution is...
a)
unsaturated
b)
saturated
c)
supersaturated
37.
In the above picture, a powder is about to be poured into the liquid. Which of the following should be done to make this powder dissolve faster?

a)
stir the powder in the liquid
b)
freeze the mixture
c)
add more powder to the liquid
d)
store the mixture in a dark place
38.
Substance A is non-polar. If it dissolves in substance B, we can conclude that substance B is....
a)
Saturated
b)
Non-polar
c)
Polar
d)
A mixture
39.

Besides stirring, which of the following should be done to make this powder dissolve faster in the liquid?

a)

Add heat to the liquid

b)

Cool the liquid in a freezer

c)

Add more powder to the liquid

d)

Store the mixture in a dark place

40.
What is a solvent?
a)
The substance that does the dissolving in a solution.
b)
The substance that is being dissolved in a solution.
c)
The mixing of different substances.
d)
The process in which neutral molecules lose or gain electrons
41.

Identify if the following solution would be saturated, unsaturated, or supersaturated: 103 g KBr at 70'C.

a)

Unsaturated

b)

Saturated

c)

Supersaturated

42.

Which of the following refers to the substance that is being dissolved in a solution?

a)

solvent

b)

solute

c)

mixture

43.

Which of the following is an example of a solvent?

a)

sugar

b)

salt

c)

copper sulphate

d)

water

44.

Based on the solubility curve, how many grams of sugar will dissolve in a 100 mL of water at 20°C?

a)

100 g

b)

150 g

c)

200 g

d)

250 g

45.

This is an example of a

a)

Solution

b)

Mixture

46.

Sugar dissolved in water is an example of a

a)

Homogeneous Mixture

b)

Heterogeneous Mixture

47.

Which is an example of a solution?

a)

Salt and Sugar

b)

Salt Water

c)

Jelly beans

d)

Concrete

48.

Which substance is MOST soluble at 90 ºC?

a)

Solid A

b)

Solid B

c)

Solid C

49.

Which solute is least soluble at 90 ⁰C?

a)

solid A

b)

solid B

c)

solid C

50.
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
51.

Which solute is LEAST soluble at 0 ºC?

a)

A

b)

B

c)

C

d)

D

52.

Which of the following actions will NOT increase the rate of dissolution (dissolving)?

a)

Stirring the solution

b)

Decreasing the temperature

c)

Increasing the surface area of the

solute

d)

Increasing the temperature

53.

Using the provided solubility graph, place the following substances in the proper type of solution formed in 100 g of water.

Categorize the following

50 g of KCl at 90°C

50 g of KCl at 60°C

48 g KNO3 at 60°C

80 g KNO3 at 48°C

65 g KNO3 at 70°C

25 g of NaCl at 0°C

10 g SO2 at 60°C

130 g of KI at 0°C

70 g of NH4Cl at 88°C

60 g of HCl at 45°C

Unsaturated
Saturated
Supersaturated
54.

Organize these options into solid or gas based on their solubility curves given in the graph.

Categorize the following

NaNO3

KI

NaCl

HCl

SO2

NH3

KClO3

NH4Cl

Solid
Gas
55.

Which of the following will create a supersaturated solution containing 30 grams of KClO3?

a)

Heat the water to 62°C.

b)

Heat the water to 70°C, then let cool to 25°C.

c)

Heat the water to 30°C, then let in cool to 20°C.

d)

Heat the water to 50°C.

56.

At approximately what temperature can 115 g of NaNO3 be dissolved in 100 g of water to create a saturated solution?

(a)   °C

57.

How much KCl can be dissolved in 100 g of water at 75°C to form a saturated solution?

(a)   g

58.

How many grams of HCl can be dissolved in 50 grams of water at 30°C? (Give the answer to the ones place.)

(a)   g

59.

How many grams of NH4Cl can be dissolved in 200 grams of water at 70°C? (Give the answer to the ones place.)

(a)   g

60.

What temperature do I have to heat 100 grams of water in order to dissolve 120 grams of NaNO3? (Give the answer to the ones place.)

(a)   °C

61.

Placing 100 g of NH3 in 100 g of water at 0°C will result in ​ (a)   dissolving.

Choose from the below words
none of it
all of it
most of it
a small amount
62.

Placing 50 g of NH4Cl in 100 g of water at 60°C will result in ​ (a)   dissolving.

Choose from the below words
none of it
all of it
most of it
a small amount
63.

What will occur when more of a solute is placed in a saturated solution?

a)

The temperature of the solution will rise.

b)

The solute will dissolve, creating a supersaturated solution.

c)

The solute will sink to the bottom of the container.

d)

The solvent will absorb the solute and decrease its energy.

64.

Why will 90 grams of NH4Cl never be able to dissolve in 100 g of water?

a)

The water will reach its boiling point before it can dissolve the NH4Cl.

b)

The sample of NH4Cl is hydrophobic and can never dissolve in water.

c)

NH4Cl is a gas, and gases cannot dissolve in water.

d)

The NH4Cl can dissolve in 100 grams of water, but only as a supersaturated solution.

65.

At what temperature can equal masses of KCl and HCl be dissolved in 100 grams of water? (Give the answer to the ones place.)

(a)   °C

66.

A solution occurs when the​ (a)   is (b)   in a​​ (c)   .

Choose from the below words
solute
dissolved
solvent
solution
salt
filtered
67.

There are three types of solutions that can be made. Each type of solution is ​ (a)   dependent. ​ (b)   solution is formed when there is more solute than the solvent can normally contain. ​ (c)   solution is formed when more solute can be added to the solution. ​ (d)   solution occurs when the solvent cannot take in any more solute.

Choose from the below words
pressure
filtered
A supersaturated
An unsaturated
A saturated
temperature
A complete
An incomplete

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