Deck 14: Solutions

Question 1

At which temperature would CO₂ gas be most soluble?

A)10. ^° C
B)20. ^° C
C)30. ^° C
D)40. ^°C

Answer 1

10. ^° C

Question 2

As solute surface area increases,the rate of dissolving

A)increases.
B)decreases.
C)remains the same.

Answer 2

increases.

Question 3

Use the figure below to determine the mass of potassium chloride required to prepare a saturated solution in 50.0 mL of water at 40°C.

A)40 g
B)20 g
C)10 g
D)45 g

Answer 3

20 g

Question 4

The dissolved solute is in equilibrium with undissolved solute in a solution which is

A)saturated.
B)unsaturated.
C)supersaturated.

Question 5

As pressure increases,the solubility of a gas in water

A)increases.
B)decreases.
C)remains the same.

Question 6

A solution containing 50.0 g of ammonium chloride in 100.0 mL of water at 60°C is

A)saturated.
B)unsaturated.
C)supersaturated.

Question 7

The solubility of ammonium chloride at 70. ^° C is 60.g of solute per 100.g of water.Whichsolution would be unsaturated at 70. ^° C?

A)110.g of solute per 200.g of water
B)120.g of solute per 200.g of water
C)30.g of solute per 50.g of water
D)35g of solute per 50.g of water

Question 8

At which temperature would KCl solid be most soluble?

A)10. ^° C
B)20. ^° C
C)30. ^° C
D)40. ^°C

Question 9

At which temperature would KNO₃ solid be most soluble?

A)283 K
B)293 K
C)303 K
D)313 K

Question 10

Which phase of matter can act as a solvent?

A)Solid
B)Liquid
C)Gas
D)All the above

Question 11

As pressure increases,the solubility of a solid in water

A)increases.
B)decreases.
C)remains the same.

Question 12

At which temperature would NH₃ gas be most soluble?

A)283 K
B)293 K
C)303 K
D)313 K

Question 13

The solubility of ammonium chloride at 70. ^°C is 60.g of solute per 100.g of water.Which solution would be saturated at 70. ^° C?

A)60.g of solute in 200.g of water
B)90.g of solute in 200.g of water
C)30.g of solute in 50.g of water
D)35g of solute in 50.g of water

Question 14

As temperature increases,the solubility of a gas in water

A)increases.
B)decreases.
C)remains the same.

Question 15

As temperature increases,the solubility of most solids in water

A)increases.
B)decreases.
C)remains the same.

Question 16

At which pressure would nitrogen gas be most soluble?

A)1.0 atm
B)1.5 atm
C)2.0 atm
D)2.5 atm

Question 17

At which pressure would carbon dioxide gas be most soluble?

A)600 torr
B)700 torr
C)800 torr
D)900 torr

Question 18

A solution is a

A)homogeneous compound.
B)heterogeneous compound.
C)homogeneous mixture.
D)heterogeneous mixture.

Question 19

Which liquid is miscible with water?

A)Carbon tetrachloride
B)Ethyl alcohol
C)Bromine
D)Oil

Question 20

As solute particle size increases,the rate of dissolving

A)increases.
B)decreases.
C)remains the same.

Question 21

One liter of 2.0 M KCl solution and two liters of 1.0 M KCl solution have the same

A)Density
B)Concentration
C)Volume
D)Moles of solute

Question 22

Which salt is most soluble in water?

A)Chromium(III)nitrate
B)Calcium carbonate
C)Silver iodide
D)Barium phosphate

Question 23

Which one molar solution would have the highest freezing point?

A)KCl
B)BaCl₂
C)AlCl₃
D)CH₃OH

Question 24

For which of the following solutes would dissolving 40 g in 100 g of water will result in an unsaturated solution at 30°C?

A)KNO₃
B)NH₄Cl
C)KCl
D)KClO₃

Question 25

Which of the following solutions would have the lowest boiling point?

A)1.0 g of NaCl in 100 g of water
B)1.0 g of KNO₃ in 100 g of water
C)1.0 g of NaC₂H₃O₂ in 100 g of water
D)All the solutions will have the same boiling point.

Question 26

Which of the following solutions will have the highest boiling point?

A)1.0 g of NaCl in 100 g of water
B)1.0 g of KNO₃ in 100 g of water
C)1.0 g of NaC₂H₃O₂ in 100 g of water
D)All the solutions will have the same boiling point.

Question 27

Which would most likely increase the solubility of a solid in water?

A)Stirring
B)Increase the surface area of the solid
C)Increase the pressure
D)Increase the temperature

Question 28

Which of the following solutions will have the lowest freezing point?

A)2.5 g of KCl in 100 g of water
B)2.5 g of NH₄Cl in 100 g of water
C)2.5 g of NaOH in 100 g of water
D)All the solutions will have the same freezing point.

Question 29

What is the mass percent of the solution formed when 5.0 g of solute is dissolved in 40.g of water?

A)8.0 %
B)11 %
C)13 %
D)14 %

Question 30

The normal boiling point of pure water is 373 K.As a solute dissolves in water,the boiling point of the solution will

A)increase.
B)decrease.
C)remain the same.

Question 31

The addition of a crystal of sodium chlorate to a sodium chlorate solution causes additional crystals of sodium chlorate to precipitate.The original solution was

A)saturated.
B)supersaturated.
C)snsaturated.

Question 32

What masses of KBr and water are needed to produce 300.g of a solution that is 3.00 % bymass?

A)9.00 g of KBr and 300.g of water
B)9.00 g of KBr and 291 g of water
C)300.g of KBr and 9.00 g of water
D)291 g of KBr and 9.00 g of water

Question 33

What is the mass percent of a solution formed by dissolving 50.0 g of glucose in 1000.g of water?

A)4.76 %
B)5.00 %
C)5.26 %
D)50.0 %

Question 34

Which is not a colligative property?

A)Boiling point
B)Freezing point
C)Density
D)Osmotic pressure

Question 35

Which salt is least soluble in water?

A)Sodium chloride
B)Iron(II)sulfide
C)Copper(II)bromide
D)Ammonium sulfide

Question 36

Which one molar solution would have the highest boiling point?

A)KCl
B)BaCl₂
C)AlCl₃
D)CH₃OH

Question 37

What mass of NaOH is needed to produce 400.g of a solution that is 12.0 % by mass?

A)4.80 g
B)48.0 g
C)352 g
D)4800 g

Question 38

Which anion will not precipitate silver ion?

A)Chloride
B)Nitrate
C)Bromide
D)Carbonate

Question 39

The freezing point of pure water is 273 K.As a solute dissolves in water,the freezing point of the solution will

A)increase.
B)decrease.
C)remain the same.

Question 40

Liquids which are capable of mixing and forming a solution are

A)unsaturated.
B)dilute.
C)miscible.
D)immiscible.

Question 41

What is the molarity of a solution in which 0.300 moles of glucose is dissolved in 500.mL of solution?

A)1.67 M
B)0.600 M
C)0.0006 M
D)150.M

Question 42

How many mL of a 4.50 (m/v)% solution would contain 23.0 g of solute?

A)19.6 mL
B)511 mL
C)1.04 mL
D)10.35 mL

Question 43

How many parts per million of solute is present in a solution that is 0.300 % by mass?

A)0.300 ppm
B)30.0 ppm
C)300.ppm
D)3000 ppm

Question 44

A solution is prepared by mixing 50.0 mL of ethanol with 300.0 mL of water.What is the volume percent of ethanol in this solution? Assume volumes are additive.

A)14.3 %
B)16.7 %
C)25.0 %
D)50.0 %

Question 45

What mass of glucose is dissolved in 1000.g of a solution that is 5.00 % by mass?

A)5.00 g
B)50.0 g
C)5.00 g
D)5.00 10³ g

Question 46

What is the molarity of a solution in which 0.800 moles of sodium hydroxide is dissolved in 1500.mL of solution?

A)0.0533 M
B)53.3 M
C)5.33 M
D)0.533 M

Question 47

What is the molarity of the resulting solution when 300.mL of a 0.600 M aqueous solutionis diluted by the addition of 400.mL of water?

A)0.257 M
B)0.450 M
C)0.800 M
D)1.40 M

Question 48

What is the molarity of the resulting solution when 20.0 mL of a 2.00 M aqueous solution is diluted by the addition of 30.0 mL of water?

A)5.00 M
B)3.00 M
C)1.33 M
D)0.800 M

Question 49

What is the molarity of a solution in which 55.49 g of calcium chloride is dissolved in enough water to make 500.mL of solution?

A)0.500 M
B)1.00 M
C)2.00 M
D)4.00 M

Question 50

What is the molality of a solution prepared by dissolving 40.0 g of glucose (C₆H₁₂O₆)in 4.00 kg of water?

A)0.0555 m
B)10.0 m
C)0.0100 m
D)0.222 m

Question 51

What is the molarity of the resulting solution when 300.mL of a 0.400 M solution is diluted to 800.mL?

A)0.109 M
B)0.150 M
C)1.07 M
D)1.47 M

Question 52

What is the molarity of a solution in which 4.00 moles of potassium chloride is dissolved in 3.00 L of solution?

A)1.33 M
B)6.00 M
C)2.67 M
D)4.00 M

Question 53

What mass of KCl is dissolved in 250.mL of a solution that is 4.00 % by mass/volume?

A)4.00 g
B)10.0 g
C)40.0 g
D)100.g

Question 54

How many moles of solute are dissolved in 400.mL of a 0.200 M solution?

A)0.0800 moles
B)0.800 moles
C)8.00 moles
D)80.0 moles

Question 55

A 20.0 % solution of KCl has a mass of 400.g.What mass of KCl is contained in this solution?

A)20.0 g
B)80.0 g
C)320.g
D)400.g

Question 56

A solution is prepared by dissolving 0.400 g of solute in 1000.g of water.How many parts per million of solute are in this solution?

A)0.400 ppm
B)4.00 ppm
C)400.ppm
D)4000 ppm

Question 57

What is the molality of a solution in which 0.3 moles of solute is dissolved in 1500.g of solvent?

A)0.0002 m
B)0.002 m
C)0.02 m
D)0.2 m

Question 58

A solution is prepared by mixing 20.0 mL of methanol with enough water to produce 400.0 mL of solution.What is the volume percent of methanol in this solution?

A)0.500 %
B)4.76 %
C)5.00 %
D)5.26 %

Question 59

What is the molarity of the resulting solution when 400.mL of a 0.400 M solution is diluted to 800.mL?

A)1.20 M
B)0.800 M
C)0.200 M
D)0.133 M

Question 60

What is the molarity of a solution in which 1.20 moles of solute is dissolved in 3.00 L of solution?

A)0.400 M
B)15.0 M
C)3.60 M
D)360.M

Question 61

In order to decrease the freezing point of 500.g of water to 1.0°C,how many grams of ethylene glycol (C₂H₆O₂)must be added? (K_f = 1.86 )

A)5.37 g
B)1.08 g
C)16.7 g
D)66.7 g

Question 62

What is the boiling point of a 4.00 m aqueous solution of a nonvolatile nonelectrolyte? (The boiling point elevation constant for water is 0.512^° C/m)

A)100.^° C
B)102^° C
C)98.0^° C
D)2.05^° C

Question 63

How many moles of KCl are dissolved in 1.20 L of a 0.400 M KCl solution?

A)0.333 moles
B)0.400 moles
C)0.480 moles
D)3.00 moles

Question 64

How would you prepare 150.0 mL of a 0.200 M aqueous solution of potassium chloride from a 0.500 M aqueous solution of potassium chloride?

A)Add 60.0 mL of water to the 0.500 M solution.
B)Take 60.0 mL of the 0.500 M solution and add enough water to complete to 150.0 mL of solution.
C)Add 90.0 mL of water to the 0.500 M solution.
D)Take 90.0 mL of the 0.500 M solution and add enough water to complete to 150.0 mL of solution.

Question 65

How many grams of Zn(s)will react completely with 100.0 mL of 0.0525 M HCl according to the following reaction? Zn(s)+ 2 HCl(aq) ZnCl₂(aq)+ H₂(g)

A)0.172 g
B)5.25 g
C)0.343 g
D)0.687 g

Question 66

When compared to pure water,aqueous solutions always have

A)higher boiling point and higher freezing point.
B)lower boiling point and lower freezing point.
C)higher boiling point and lower freezing point.
D)lower boiling point and higher freezing point.

Question 67

What is the boiling point of a 6.00 m aqueous solution of a nonvolatile nonelectrolyte? (The boiling point elevation constant for water is 0.512^° C/m)

A)100.^° C
B)103.^° C
C)3.07^° C
D)96.9^° C

Question 68

How many moles of solute are present in 300.mL of a 0.240 M solution?

A)0.0720 moles
B)0.240 moles
C)0.800 moles
D)1.25 moles

Question 69

What is the freezing point of a 0.400 m aqueous solution of a nonvolatile nonelectrolyte? ( The freezing point depression constant for water is 1.86⁰ C/m)

A)0.744^° C
B)0.00^° C
C)-7.44^° C
D)-0.744^° C

Question 70

How many liters of Cl₂ gas at a pressure of 0.950 atm and a temperature of 298K will be collected from the reaction of 25.0 mL of a 0.100 M aqueous solution of KMnO₄ and an excess of HCl? 2 KMnO₄(aq)+ 16 HCl(aq) 2 MnCl₂(aq)+ 5 Cl₂(g)+ 8 H₂O(l)+ 2 KCl(aq)

A)0.321 L
B)0.0644 L
C)0.145 L
D)0.161 L

Question 71

What mass of magnesium sulfate is dissolved in 400.mL of a 0.800 M solution of magnesium sulfate?

A)0.320 g
B)2.00 g
C)38.5 g
D)241 g

Question 72

What mass of silver nitrate is dissolved in 40.0 mL of a 0.400 M solution of silver nitrate?

A)0.272 g
B)2.72 g
C)27.2 g
D)272 g

Question 73

What is the molarity of a solution which contains 9.12 g of hydrogen chloride in 200.mL of solution?

A)0.250 M
B)0.500 M
C)1.00 M
D)1.25 M

Question 74

What mass of calcium chloride is dissolved in 100.mL of a 1.20 M solution of calcium chloride?

A)0.120 g
B)1.20 g
C)13.3 g
D)133 g

Question 75

What mass of water must be added to 30.5 g of KNO₃ to prepare a 45.0% by mass solution?

A)13.7 g
B)44.2 g
C)37.3 g
D)67.8 g

Question 76

What is the boiling point of a 3.40 m aqueous solution of a nonvolatile nonelectrolyte? (The boiling point elevation constant for water is 0.512^° C/m)

A)1.74^° C
B)98.3^° C
C)100.^° C
D)102^° C

Question 77

What is the freezing point of a 1.40 m aqueous solution of a nonvolatile nonelectrolyte? ( The freezing point depression constant for water is 1.86⁰ C/m)

A)-2.60⁰ C
B)0.00⁰ C
C)2.60⁰ C
D)102.60⁰ C

Question 78

What is the freezing point of a 3.00 m aqueous solution of a nonvolatile nonelectrolyte? (The freezing point depression for water is 1.86^° C/m)

A)-3.00^° C
B)-5.58^° C
C)3.00^° C
D)5.58^° C

Question 79

What is the molarity of a solution which contains 85.00 g of sodium nitrate dissolved in 2.00 L of solution?

A)0.500 M
B)1.00 M
C)2.00 M
D)4.00 M

Question 80

How many moles of KF are dissolved in 1400.mL of a 3.00 M KF solution?

A)0.467 moles
B)2.14 moles
C)3.00 moles
D)4.20 moles