Deck 5: Solution Concentration

Question 1

There is a 9 M aqueous HCl solution in the stock room, but a 5 M solution is required for an experiment. Doubling the volume of the 9 M sample with water will produce the 5 M solution.

Answer 1

True

Question 2

Solution concentration is an intensive property.

Answer 2

True

Question 3

The following equation can be used when C represents either a M or % (w/v) concentration.

Answer 3

True

Question 4

The conversion factor for converting from moles of HPO₄^2-- to equivalents is:

Question 5

For a 2.00 M solution, the conversion factor for determining the number of moles of solute in a given volume of solution is:

Question 6

The %(v/v) of a solution can be defined as:

Question 7

The solubility of a compound in water was measured and found to be 0.7 g/L. This compound would be classified as insoluble.

Question 8

Dialysis and osmosis are used for the same purposes.

Question 9

The concentration of cholesterol in plasma was determined to be 215 mg/dL. The mass of cholesterol in 59.1 mL of this plasma is 127 mg.

Question 10

In cases of cerebral endema, a hypertonic solution is administered. The goal of giving the patient the hypertonic solution would be to pull fluid from the cells through the process of osmosis.

Question 11

The total molarity of an intravenous solution is given on the label as 151 mEq/L. The osmolarity of this solution is also 151 mEq/L.

Question 12

Solution contains 55 mg of magnesium in 2.5 L of solution. The concentration of this solution is 2.2 mg/dL.

Question 13

A normal saline solution is a 0.90% (w/v) aqueous solution of NaCl. This is the same as:

Question 14

Putting a celery stick in distilled water results in the uptake of water by the celery.

Question 15

The solubility of Na₂SO₄ will probably increase with increasing temperature.

Question 16

Consider the two containers shown below separated by a seminpermeable membrane. When allowed to stand overnight, water will have moved from the right-hand container to the left hand container..

Question 17

When you have your blood drawn, the most common method of expressing the plasma level of sodium and potassium is as mEq/L.

Question 18

The osmotic pressure of a 0.10 M NaCl solution will be the same as that of a 0.10 M urea solution.

Question 19

If you have 9 g of NaCl in 1 L of water, this solution is 0.9% NaCl and is called normal saline or NS.

Question 20

Consider the following graph. The solute is probably a gas.

Question 21

What is the molar mass of ibuprofen, C₁₃H₁₈O₂?

A) 29.0 g/mol
B) 206.3 g/mol
C) 289.4 g/mol
D) 377.7 g/mol

Question 22

Saline solutions (NaCl in water) used to deliver intravenous drugs are 0.89%(w/v). What mass of NaCl would be needed to prepare 450.0 mL of such a solution?

A) g
B) 0.89 g
C) 4.0 g
D) 5.1 g

Question 23

How many grams of solid KCl are needed to prepare 250.0 mL of 0.235 M solution?

A) 9.32 g
B) 31.3 g
C) 15.6 g
D) 4.38 g

Question 24

A solution contains 35.5 mg of Vitamin C in 175 mL of solution. The concentration of this solution could be expressed as:

A) 203 ppm.
B) 0.0203% (m/v).
C) 20.3 mg/dL.
D) All of the above could be used.

Question 25

What is the total molarity of solute particles in a 0.250 M solution of (NH₄)₂SO₄?

A) 0.250 M
B) 0.500 M
C) 0.750 M
D) 0.0833 M

Question 26

Calculate the number of moles of ZnCl₂, in 180.0 mL of 0.330 M solution.

A) mol
B) 1.83 mol
C) 0.545 mol
D) 59.4 mol

Question 27

A solution is made by dissolving 5.84 grams of NaCl in enough distilled water to give a final volume of 1.00 L. What is the molarity of the solution?

A) 0.100 M
B) 1.00 M
C) 0.0250 M
D) 0.400 M

Question 28

What is the molarity of a solution containing 0.585 mol of lactic acid in 250.0 mL of solution?

A) 146 M
B) 2.34 M
C) 0.427 M
D) 0.146 M

Question 29

Calculate the total molarity of solute particles in a solution that contains 0.050 M glucose (a nonelectrolyte) and 0.200 M CaCl₂.

A) 0.250 M
B) 0.450 M
C) 0.650 M
D) 0.350 M

Question 30

How would the following solution be classified? 0.05 M in KCl and 0.14 M in glucose

A) isotonic
B) hypertonic
C) hypotonic

Question 31

A solution is made by dissolving 22.5 mL of oil in enough gasoline to give 60.5 mL of solution. What is the % (v/v) of oil in the solution?

A) 37.2 % (v/v)
B) 269% (v/v)
C) 0.372% (v/v)
D) 27.1% (v/v)

Question 32

A solution has a concentration of 16 ppm. Which of the following is another way to describe the concentration of this solution?

A) 0.016 ppb
B) 0.16 ppb
C) ppb
D) ppb

Question 33

Which of the following pass through both osmotic and dialysis membranes?

A) solvent molecules
B) large molecules
C) small molecules that are larger than solvent molecules
D) both solvent and small molecules

Question 34

Consider the two containers shown below separated by a seminpermeable membrane. When allowed to stand overnight, there will be no change in the liquid levels.

Question 35

The following list gives the concentration of the major components of blood plasma. Solute What is the total concentration of all the minor components in the plasma?

A) 0.02 M
B) 0.28 M
C) 0.12 M
D) Cannot be determined with the given information.

Question 36

Lactated Ringer's solution 109 mEq/L of Cl^-. What is the mass of the chloride ion in 225 mL of this solution?

A) 24.5 g
B) 0.0245 g
C) 0.869 g
D) 0.109 g

Question 37

Which of the following is associated with cells in a hypertonic solution?

A) crenation
B) hemolysis
C) reverse osmosis
D) none of these

Question 38

If 1.00 mol of each of the following solutes is dissolved in 2.00 L of an aqueous solution, which solution contains the largest number of solute particles?

A) LiBr
B) sucrose
C) Ca(NO₃)₂
D) Na₃PO₄

Question 39

What is the mass of salt in a 400.0 gram-sample of salt water which is 1.50% (w/w) salt?

A) 1.50 g
B) 2.67 g
C) 3.00 g
D) 6.00 g

Question 40

What will happen to a red blood cell if placed in the following solution? 0.14 M lactose (a nonelectrolyte)

A) crenation
B) hemolysis
C) nothing

Question 41

Consider two solutions, A and B, separated by a seminpermeable membrane that allows water and small molecules to pass through as shown below. Fill the blank(s) with the appropriate terms from the list below.
right
left
osmosis
dialysis
Solution A is 0.50 M in sucrose and Solution is 1.5 M in sucrose. After one hour, the compartment on the ____________________ will have the higher osmotic pressure.

Question 42

Consider the solutions shown in the containers below. The composition of each solution is given in the image. Fill the blank with the appropriate term from the list below.
isotonic
hypotonic
hypertonic
crenation
hemolysis
no change
A red blood cell is placed in the solution in container A. The cell will undergo _____________________.

Question 43

Based on the following graph, approximately what minimum temperature would be needed to dissolved 20 g of this solute in 1.00 L of water?

A) 9 C
B) 100 C
C) 35 C
D) 80 C

Question 44

An oral rehydration solution contains 30 mEq/L of citrate^3-, what is the molarity of citrate in this solution?

A) 0.09 M
B) 90 M
C) 10 M.
D) 0.01 M

Question 45

Consider the solutions shown in the containers below. The composition of each solution is given in the image. Fill the blank with the appropriate term from the list below.
isotonic
hypotonic
hypertonic
crenation
hemolysis
no change
A red blood cell is placed in the solution in container C. The cell will undergo ____________________.

Question 46

Consider two solutions, A and B, separated by a seminpermeable membrane that allows water and small molecules to pass through as shown below. Fill the blank(s) with the appropriate terms from the list below.
right
left
osmosis
dialysis
If the seminpermeable membrane has pores too small to allow glucose to pass through, ______________will not occur.

Question 47

Consider two solutions, A and B, separated by a seminpermeable membrane that allows water and small molecules to pass through as shown below. Fill the blank(s) with the appropriate terms from the list below.
right
left
osmosis
dialysis
Solution A is pure water, and solution B is 0.05 M glucose. Water molecules will move to the ______________________compartment and glucose molecules will move to the __________________compartment.

Question 48

Consider two solutions, A and B, separated by a seminpermeable membrane that allows water and small molecules to pass through as shown below. Fill the blank(s) with the appropriate terms from the list below.
right
left
osmosis
dialysis
Solution A is 0.10 M in fructose and 0.05 M in glucose. Solution B is 0.20 M in sucrose. The direction of osmosis will be to the _______________________.

Question 49

A stockroom attendant has a 15.0% (w/v) solution of KOH. What volume of this solution should she use if she needs to prepare 20.0 mL of a 10.0% (w/v) solution?

A) 6.67 mL
B) 7.50 mL
C) 13.3 mL
D) 15.0 mL

Question 50

If a solution contains 3.25 mol of Al³⁺, how many equivalents of Al³⁺ are present?

A) 3.25 Eq
B) 1.08 Eq
C) 6.50 Eq
D) 9.75 Eq

Question 51

Consider two solutions, A and B, separated by a seminpermeable membrane that allows water and small molecules to pass through as shown below. Fill the blank(s) with the appropriate terms from the list below.
right
left
osmosis
dialysis
Solution A is 0.10 M in lactose and 0.050 M in urea. Solution B is 0.15 M in KCl. Water will flow to the ______________________compartment.

Question 52

A normal concentration of sodium (Na) in blood plasma is 141 mEq/L (US average range is 135-145 mEq/L). How many mg of sodium are there in a 10.0 mL sample of his blood plasma?

A) 141 mg
B) 14.1 mg
C) 1.41 mg
D) 1.40 × 10³ mg

Question 53

Consider two solutions, A and B, separated by a seminpermeable membrane that allows water and small molecules to pass through as shown below. Fill the blank(s) with the appropriate terms from the list below.
right
left
osmosis
dialysis
Solution A is 0.010 M glucose, and solution B is 0.050 M glucose. The glucose will dialyze to the _____________________.

Question 54

How many mL of 6.00 M HCl are needed to prepare 1.50 L of 0.200 M HCl solution?

A) 1.80 × 10⁴ mL
B) 125 mL
C) 2.00 × 10−³ mL
D) 50.0 mL

Question 55

A solution contains 5.75 mg of magnesium ions in 332 mL of solution. What is the concentration of the solution in mEq/L?

A) 0.712 mEq/L
B) 0.473 mEq/L
C) 1.42 mEq/L.
D) 34.6 mEq/L

Question 56

Which of the following is(are) an example(s) of a hypertonic intravenous solution? (NS represents normal saline.)

A) 0.9% NS
B) 0.45% NS with D5 (termed half Normal Saline with Dextrose 5%)
C) a. D5 ½ NS (Dextrose 5% with half NS)
D) a. 2% NS
E) all are hypertonic solutions
F) only b and d are hypertonic solutions

Question 57

A solution is prepared by adding 25.0 mL of 1.30 M glucose solution to a flask, and then adding enough water to give a final volume of 200.0 mL. What is the molarity of the solution?

A) 0.260 M
B) 0.163 M
C) 6.50 M
D) 1.24 M

Question 58

Based on the following graph, the solubility of this substance at 80 °C is approximately:

A) 25 g/L.
B) 15 g/L.
C) 10 g/L
D) 20 g/L

Question 59

Consider the solutions shown in the containers below. The composition of each solution is given in the image. Fill the blank with the appropriate term from the list below.
isotonic
hypotonic
hypertonic
crenation
hemolysis
no change
A red blood cell is placed in the solution in container B. The cell will undergo ____________________.

Question 60

A student is preparing a sugar water solution to make rock candy. When the student adds sugar to the solution, the added sugar does not dissolve. Which kind of solution does the student have?

A) a saturated solution
B) a solution at its solubility limit
C) an unsaturated solution
D) a suspension

Question 61

Consider the two containers separated by a semipermeable membrane that allows both glucose and sucrose to pass through. Answer the following questions as appropriate with: right, left, or no movement.
What is the total molarity of a solution containing 25.7 g of sucrose (C₁₂H₂₂O₁₁) and 16.1 g of ribose (C₅H₁₀O₅) dissolved in enough water to produce 850.0 mL of solution?

Question 62

The vitamins A (retinol) and C (ascorbic acid) are shown below. All atoms other than C and H are explicitly shown. A C
Complete the following questions be entered in the appropriate letter (A or C) in the blank provided.
The beaker below contains oil (a compound of mostly carbon and hydrogen) in the upper layer and water in the lower layer. Oil floats on top of the water because it is less dense. The vitamin that would be the most soluble in the upper layer is ______.

Question 63

Consider the two containers separated by a semipermeable membrane that allows both glucose and sucrose to pass through. Answer the following questions as appropriate with: right, left, or no movement.
Upon standing the water molecules will move in which direction?

Question 64

Consider the following structure. Complete the sentence using the appropriate terms given below.
hydrophobic
hydrophilic
soluble
insoluble
The portion of the molecule in the box is classified as ______________________ and that in the circle is classified as_____________________.

Question 65

The vitamins A (retinol) and C (ascorbic acid) are shown below. All atoms other than C and H are explicitly shown. A C
Complete the following questions be entered in the appropriate letter (A or C) in the blank provided.
The vitamin that would be classified as fat-soluble is ______.

Question 66

The vitamins A (retinol) and C (ascorbic acid) are shown below. All atoms other than C and H are explicitly shown. A C
Complete the following questions be entered in the appropriate letter (A or C) in the blank provided.
Write the conversion factor that corresponds to 7.75%(w/v) NaCl.

Question 67

The vitamins A (retinol) and C (ascorbic acid) are shown below. All atoms other than C and H are explicitly shown. A C
Complete the following questions be entered in the appropriate letter (A or C) in the blank provided.
The vitamin that would not be stored by the human body is ______.

Question 68

The vitamins A (retinol) and C (ascorbic acid) are shown below. All atoms other than C and H are explicitly shown. A C
Complete the following questions be entered in the appropriate letter (A or C) in the blank provided.
The vitamin that would be the most hydrophobic is ______.

Question 69

For the following questions, fill in the blank with one of the following terms as appropriate.
increase
decrease
remains constant
cannot predict
As the size of the hydrophobic portion of a molecule increases, the solubility in water will ___________.

Question 70

Consider the two containers separated by a semipermeable membrane that allows both glucose and sucrose to pass through. Answer the following questions as appropriate with: right, left, or no movement.
Calculate the percent concentration (m/v) of a solution prepared by dissolving 6.45 g of glucose in enough water to produce 85.0 mL of solution?

Question 71

For the following questions, fill in the blank with one of the following terms as appropriate.
increase
decrease
remains constant
cannot predict
For many ionic solids such as NaHCO₃ water solubility will ___________ at higher temperatures..

Question 72

Consider the two containers separated by a semipermeable membrane that allows both glucose and sucrose to pass through. Answer the following questions as appropriate with: right, left, or no movement.
Upon standing the glucose molecules will move in which direction?

Question 73

Consider the two containers separated by a semipermeable membrane that allows both glucose and sucrose to pass through. Answer the following questions as appropriate with: right, left, or no movement.
Calculate the parts per million (ppm) of a solution prepared by dissolving 7.45 mg of glucose in enough water to produce 145.0 mL of solution?

Question 74

Consider the two containers separated by a semipermeable membrane that allows both glucose and sucrose to pass through. Answer the following questions as appropriate with: right, left, or no movement.
Upon standing the sucrose molecules will move in which direction?

Question 75

For the following questions, fill in the blank with one of the following terms as appropriate.
increase
decrease
remains constant
cannot predict
When a beverage can is opened the pressure of the gas above the liquid will___________ causing the solubility of the gas to ____________.

Question 76

Consider the solutions shown in the containers below. The composition of each solution is given in the image. Fill the blank with the appropriate term from the list below.
isotonic
hypotonic
hypertonic
crenation
hemolysis
no change
The tonicity of the solution in container C is ______________________.

Question 77

Consider the following structure. Complete the sentence using the appropriate terms given below.
hydrophobic
hydrophilic
soluble
insoluble
This molecule is probably____________________in water.