Deck 9: Solutions

Question 1

How many equivalents are present in 0.40 moles of

A) 0.10 Eq
B) 1.2 Eq
C) 0.80 Eq
D) 0.40 Eq
E) 0.20 Eq

Answer 1

0.80 Eq

Question 2

A hydrogen bond is

A)a covalent bond between H and O.
B)a bond that is stronger than a covalent bond.
C)an ionic bond between H and another atom.
D)an attraction between a hydrogen atom bonded to N, O, or F and an N, O, or F atom on another molecule.
E)the polar O-H bond in water.

Answer 2

an attraction between a hydrogen atom bonded to N, O, or F and an N, O, or F atom on another molecule.

Question 3

When some of the sugar added to iced tea remains undissolved at the bottom of the glass, the solution is

A)saturated.
B)polar.
C)dilute.
D)nonpolar.
E)unsaturated.

Answer 3

saturated.

Question 4

The O-H bond in water is polar because

A)oxygen occupies more space than hydrogen.
B)oxygen is much more electronegative than hydrogen.
C)hydrogen is much more electronegative than oxygen.
D)it is an ionic bond.
E)it is a hydrogen bond.

Question 5

In water, a substance that partially dissociates in solution is called a

A)strong electrolyte.
B)semiconductor.
C)nonconductor.
D)weak electrolyte.
E)nonelectrolyte.

Question 6

Hydrogen bonds are a major factor in the structure of

A)dry ice.
B)air.
C)DNA.
D)hydrogen chloride.
E)table salt.

Question 7

Which one of the following compounds will be insoluble in water?

A)
B)
C)
D)
E)

Question 8

Oil does not dissolve in water because

A)oil is nonpolar.
B)water is saturated.
C)water is nonpolar.
D)oil is hydrated.
E)oil is polar.

Question 9

How many equivalents are present in 5.0 g of

A) 0.37 Eq
B) 0.19 Eq
C) 3 Eq
D) 15 Eq
E) 0.56 Eq

Question 10

In water, a substance that dissociates completely in solution is called a

A)nonconductor.
B)strong electrolyte.
C)semiconductor.
D)nonelectrolyte.
E)weak electrolyte.

Question 11

Which of the following molecules can form hydrogen bonds?

A)HI
B)BH₃
C)NH₃
D)NaH
E)CH₄

Question 12

An intravenous replacement solution contains 4.0 mEq/L of ions. How many grams of are in 3.0 L of the solution?

A) 240 g
B) 0.24 g
C) 0.40 g
D) 4.0 g
E) 0.80 g

Question 13

Water is a polar solvent and hexane is a nonpolar solvent. Which of the following correctly describes the solubility of the solute?

A) soluble in hexane
B) soluble in water
C) soluble in water
D) octane, soluble in water
E) mineral oil, soluble in water

Question 14

An equivalent is

A)1 mole of any ion.
B)the amount of ion that carries 1 mole of electrical charge.
C)1 mole of an ionic compound.
D)the amount of ion that has a 1- charge.
E)the amount of ion that has a 1+ charge.

Question 15

In a solution, the solvent

A)is never a solid.
B)is a liquid.
C)can be a liquid or gas.
D)is the substance present in the smallest concentration.
E)can be a solid, liquid, or gas.

Question 16

When KCl dissolves in water,

A) the ions are attracted to dissolved ions.
B) the ions are attracted to the partially positive hydrogen atoms of the water molecule.
C) the ions are attracted to the partially negative oxygen atoms of the water molecule.
D) the ions are attracted to the partially negative oxygen atoms of the water molecule.
E) the ions are attracted to ions on the \mathrm{KCl} crystal.

Question 17

How many equivalents are present in 5.0 moles of

A) 3.0 Eq
B) 5.0 Eq
C) 15 Eq
D) 0.67 Eq
E) 1.3 Eq

Question 18

The solubility of KI is 50 g in 100 g of at If 110 grams of KI are added to 200 grams of

A) the solution will start boiling.
B) all of the KI will dissolve.
C) a saturated solution will form.
D) the solution will be unsaturated.
E) the solution will freeze.

Question 19

A)solid.
B)solute.
C)solution.
D)solvent.
E)ionic compound.

Question 20

An increase in the temperature of a solution usually

A)increases the boiling point.
B)decreases the solubility of a solid solute in the solution.
C)increases the solubility of a solid solute in the solution.
D)increases the solubility of a gas in the solution.
E)decreases the solubility of a liquid solute in the solution.

Question 21

When solutions of and are mixed,

A) no precipitate forms.
B) a precipitate of forms.
C) precipitates of and KCl form.
D) a precipitate of forms.
E) a precipitate of KCl forms.

Question 22

Which one of the following compounds will be soluble in water?

A)
B)
C)
D)
E)

Question 23

Rubbing alcohol is 70.% (v/v)isopropyl alcohol by volume. How many mL of isopropyl alcohol are in a 1 pint (473 mL)container?

A)70. mL
B)0.15 mL
C)330 mL
D)470 mL
E)680 mL

Question 24

When solutions of NaCl and are mixed,

A) a precipitate of AgCl forms.
B) precipitates of and AgCl form.
C) a precipitate of forms.
D) no precipitate forms.
E) a precipitate of forms.

Question 25

Which one of the following compounds will be insoluble in water?

A)
B)
C)
D)
E)

Question 26

Which one of the following compounds will be soluble in water?

A)
B)
C)
D)
E)

Question 27

How many milliliters of a 25% (m/v) NaOH solution would contain 75 g of NaOH?

A) 75 mL
B) 25 mL
C) 33 mL
D)
E) 19 mL

Question 28

What volume (mL) of a 15 %(m/v) NaOH solution contains 120 g NaOH ?

A) 18 mL
B) 120 mL
C) 13 mL
D) 0.13 mL
E) v

Question 29

What is the molarity of a solution that contains 3.25 moles of in 250 mL of solution?

A) 13.0 M
B) 2.60 M
C) 3.25 M
D) 6.50 M
E) 0.0130 M

Question 30

The mass percent (m/m)concentration refers to

A)grams of solute in 100 g of solvent.
B)grams of solvent in 100 g of solution.
C)grams of solute in 1 kg of solution.
D)grams of solute in 1 kg of solvent.
E)grams of solute in 100 g of solution.

Question 31

A patient needs to receive 85 grams of glucose every 12 hours. What volume of a 5.0% (m/v)glucose solution needs to be administered to the patient each 12 hours?

A)1700 mL
B)204 mL
C)6000 mL
D)60 mL
E)17 mL

Question 32

What is the mass/volume percent (m/v)of a solution prepared from 50. g NaCl and 2.5 L of water?

A)20.%
B)0.050%
C)5.0%
D)0.020%
E)2.0%

Question 33

When solutions of KCl and are mixed, a precipitate forms. Which of the following is the balanced equation for the reaction that occurs?

A)
B)
C)
D)
E)

Question 34

What is the mass/volume percent (m/v)of a solution prepared from 50.0 g NaCl and 150.0 g of water?

A)40.0%
B)3.00%
C)33.3%
D)0.250%
E)25.0%

Question 35

The mass/volume percent concentration refers to

A)grams of solute in 100 mL of solution.
B)grams of solute in 1 L of solution.
C)grams of solute in 1 L of solvent.
D)grams of solvent in 100 mL of solution.
E)grams of solute in 100 mL of solvent.

Question 36

How many grams of glucose are needed to prepare 400. mL of a 2.0% (m/v)glucose solution?

A)8.0 g
B)800. g
C)200. g
D)0.0050 g
E)2.0 g

Question 37

What is the molarity of a solution that contains 17 g of in 0.50 L of solution?

A) 0.50 M
B) 0.029 M
C) 2.0 M
D) 1.0 M
E) 34 M

Question 38

According to Henry's law, the solubility of a gas in a liquid

A)remains the same as the temperature increases.
B)decreases as the gas pressure above the liquid increases.
C)depends on the liquid polarity.
D)increases as the gas pressure above the liquid increases.
E)depends on the liquid density.

Question 39

Which one of the following compounds will be insoluble in water?

A)
B)
C)
D)
E)

Question 40

How many mL of 0.234 M KCl solution will react completely with 25.0 mL of 0.168 M solution?

A) 35.6 mL
B) 17.9 mL
C) 34.8 mL
D) 25.0 mL
E) 22.5 mL

Question 41

What is the molarity of a solution which contains 58.5 g of sodium chloride dissolved in 0.500 L of solution?

A)1.50 M
B)2.00 M
C)4.00 M
D)1.00 M
E)0.500 M

Question 42

What is the molarity of a KCl solution made by diluting 75.0 mL of a 0.200 M solution to a final volume of 100. mL?

A)0.267 M
B)0.200 M
C)0.150 M
D)6.67 M
E)0.100 M

Question 43

How many moles of are in 250 mL of a 3.0 M of solution?

A) 750 moles
B) 1.3 moles
C) 0.75 mole
D) 83 moles
E) 3.0 moles

Question 44

What is the final mass/volume (m/v)% of a KOH solution that is prepared by diluting 110 mL of a 6.0% (m/v) KOH solution to 330 mL?

A)12%
B)2.0%
C)1.0%
D)18%
E)6.0%

Question 45

What is the molarity of a solution containing 5.0 moles of KCl in 2.0 L of solution?

A)5.0 M
B)2.0 M
C)1.0 M
D)2.5 M
E)10. M

Question 46

During the process of diluting a solution to a lower concentration,

A)the volume of the solution does not change.
B)the amount of solvent does not change.
C)water is removed from the concentrated solution.
D)there is more solute in the concentrated solution.
E)the amount of solute does not change.

Question 47

What volume of a 2.00 M KCl solution is required to prepare 500. mL of a 0.100 M KCl solution?

A)
B) 2.00 mL
C) 25.0 mL
D)
E) 0.0400 mL

Question 48

What volume of a 1.5 M KOH solution is needed to provide 3.0 moles of KOH?

A)4.5 L
B)0.22 L
C)3.0 L
D)2.0 L
E)0.50 L

Question 49

What volume of 2.5% (m/v)KOH can be prepared from 125 mL of a 5.0% KOH solution?

A)0.0040 mL
B)125 mL
C)0.10 mL
D)63 mL
E)250 mL

Question 50

How many grams of are formed when 25.0 mL of 0.654 M KCl react completely with

A)4.54 g
B)22.7 g
C)2.27 g
D)9.08 g
E)1.64 g

Question 51

The molarity (M)of a solution refers to

A)moles of solute/L of solvent.
B)grams of solute/100 mL of solution.
C)grams of solute/L of solution.
D)moles of solute/L of solution.
E)moles of solute/100 mL of solution.

Question 52

When 200. mL of water are added to 100. mL of 12% KCl solution the final concentration of KCl is (Assume the volumes additive.)

A)12%.
B)6.0%.
C)4.0%.
D)8.0%.
E)36%.

Question 53

The process that occurs in this system is

A)hydration.
B)filtration.
C)neutralization.
D)dialysis.
E)osmosis.

Question 54

A homogeneous mixture that does not settle out upon standing is

A)hydrated.
B)homogeneous.
C)a colloid.
D)an element.
E)a suspension.

Question 55

For the question(s)that follow, consider a 4% starch solution and a 10% starch solution separated by a semipermeable membrane.
Which starch solution will decrease in volume as osmosis occurs?

A)10%
B)4%
C)Neither exerts osmotic pressure so no change in volume occurs.
D)They exert equal osmotic pressures so no change in volume occurs.
E)They exert opposite osmotic pressures so no change in volume occurs.

Question 56

Use the reaction:

What volume of 0.123 M is needed to form 0.657 g of

A) 53.4 mL
B) 34.3 mL
C) 34.2 L
D) 10.7 mL
E) 17.1 mL

Question 57

What volume of 0.10 M NaOH can be prepared from 250. mL of 0.30 M NaOH?

A)750 L
B)0.75 L
C)0.25 L
D)0.075 L
E)0.083 L

Question 58

In the process known as osmosis, ________ moves through a semipermeable membrane into an area of ________ concentration.

A)solvent; lower solvent
B)solvent; higher solvent
C)solute; lower solute
D)solvent; lower solute
E)solute; higher solute

Question 59

Which of the following occurs in this system?

A)Water does not cross the membrane at all.
B)There is a net flow of water from the 4% starch solution into the 10% starch solution.
C)Water flows equally in both directions.
D)Starch moves out of the 10% starch solution into the 4% starch solution.
E)There is a net flow of water from the 10% starch solution into the 4% starch solution.

Question 60

How many mL of 0.246 M are needed to react completely with 36.0 \mathrm{~mL} of 0.322 M KCi?

A)36.0 mL
B)72.0 mL
C)47.1 mL
D)23.6 mL
E)18.0 mL

Question 61

Which solution is isotonic to a red blood cell?

A)water
B)0.9% NaCl
C)10% glucose
D)0.5% NaCl
E)2% glucose

Question 62

A solution that has an osmotic pressure less than that of red blood cells is called

A)isotonic.
B)hypertonic.
C)unsaturated.
D)saturated.
E)hypotonic.

Question 63

A red blood cell will undergo crenation in

A)water.
B)5% glucose.
C)3% glucose.
D)0.5% NaCl.
E)7% NaCl.

Question 64

0.50 mole of KCl, a strong electrolyte, is added to 2.0 kg of water. The boiling point of the solution will be ________ the boiling point of pure water.

A)higher than
B)lower than
C)the same as

Question 65

Using a kidney machine to remove waste products from the blood is known as ________.

A)autolysis
B)hemodialysis
C)hemolysis
D)osmosis
E)osmolysis

Question 66

An aqueous mixture containing starch (a colloid), NaCl, glucose, and albumin (a colloid)is placed in a dialyzing bag and immersed in distilled water. Which of the following correctly describes the location of the indicated
Substance after dialysis?

A)albumin inside and outside
B)starch inside and outside
C)albumin, inside
D)water inside only
E)starch outside

Question 67

Acetic acid can be classified as a(n)________.

A)gas
B)ionic compound
C)solid
D)weak electrolyte
E)strong electrolyte

Question 68

NaCl can be classified as a ________.

A)liquid
B)strong electrolyte
C)gas
D)nonelectrolyte
E)weak electrolyte

Question 69

0.50 mole of NaCl , a strong electrolyte, is added to 1.0 kg of water. The freezing point of the solution will be

A)
B)
C)
D)
E)

Question 70

A solution with the same osmotic pressure as the blood is

A)nontonic to the blood.
B)isotonic to the blood.
C)hypotonic to the blood.
D)hypertonic to the blood.
E)molar to the blood.

Question 71

A red blood cell will undergo hemolysis in

A)5% glucose.
B)0.9% NaCl.
C)water.
D)10% glucose.
E)5% NaCl.

Question 72

1.0 mole of NaCl, a strong electrolyte, is added to 1.0 kg of water. The freezing point of the solution will be ________ the freezing point of pure water.

A)higher than
B)lower than
C)the same as

Question 73

Methanol, CH3OH, can be classified as a ________.

A)strong electrolyte
B)solid
C)gas
D)nonelectrolyte
E)weak electrolyte

Question 74

The process by which a semipermeable membrane allows water molecules, small molecules, and ions to pass through while retaining large particles is called

A)dilution.
B)dialysis.
C)osmotic pressure.
D)solvation.
E)hydration.

Question 75

0.50 mole of a strong electrolyte, is added to 1.0 kg of water. The freezing point of the solution will be

A)
B)
C)
D)
E)

Question 76

A substance that produces only a small number of ions in solution is known as a ________ electrolyte.

Question 77

The molarity of a solution of 5.0 g of KCl in 100. mL of solution is ________.

A)0.67 M
B)0.038 M
C)0.13 M
D)0.067 M
E)1.3 M

Question 78

A mixture in which one component settles is called a(n)________.

A)nonelectrolyte
B)solution
C)colloid
D)electrolyte
E)suspension

Question 79

If 100. mL of water is added to 25 mL of 5.0 M NaCl, the final concentration is ________. (Assume volumes are additive.)

A)1.0 M
B)1.3 M
C)25 M
D)2.0 M
E)5.0 M

Question 80

A substance that carries an electric current when dissolved in water is called a(n)________.