Question 1

How much NaOH is present in a 75.0 mL sample of a 5.00% (w/v)solution?

Accepted Answer

A) 3.75 g 
B) 5.00 g 
C) 6.67 g 
D) 15.0 g 
E) 75.0 g 
A) 3.75 g 
B) 5.00 g 
C) 6.67 g 
D) 15.0 g 
E) 75.0 g A

Question 2

What is the molarity of a solution prepared by dissolving 1.25 mol AgNO3 in enough water to make 2.00 × 103 mL of solution?

Accepted Answer

A) 1.25 M 
B) 2.50 M 
C) 0.625 M 
D) 0.00250 M 
E) 0.106 M 
A) 1.25 M 
B) 2.50 M 
C) 0.625 M 
D) 0.00250 M 
E) 0.106 M C

Question 3

All of the water in a 0.200 M solution of NaCl was evaporated and 0.150 mole of NaCl was obtained.What was the original volume of the sample?

Accepted Answer

A) 30.0 mL 
B) 333 mL 
C) 750.mL 
D) 1000 mL (1.00 × 103 mL) 
E) 1330 mL 
A) 30.0 mL 
B) 333 mL 
C) 750.mL 
D) 1000 mL (1.00 × 103 mL) 
E) 1330 mL C

Question 4

How many g of NaOH is needed to make 350.mL of a 2.50% (w/v)solution?

Accepted Answer

A) 8.75 g 
B) 6.25 g 
C) 35.0 g 
D) 21.9 g 
E) 100.g 
A) 8.75 g 
B) 6.25 g 
C) 35.0 g 
D) 21.9 g 
E) 100.g

Question 5

Match the following.
-hydrate

Accepted Answer

A) a solution in which more solute can be dissolved 
B) the shrinking of a red blood cell when placed in a solution of greater osmolarity than the cell itself 
C) refers to a solution having a greater osmolarity than 0.30 Osmol,the osmolarity of normal red blood cells 
D) refers to two solutions having the same osmolarity 
E) a substance which dissociates completely in solution,providing a relatively large number of ions to conduct electricity
F)an ionic compound which holds water molecules within its crystalline structure
G)a substance which partially dissociates in solution,providing a relatively small number of ions to conduct electricity
H)the swelling and bursting of a red blood cell when placed in a solution of lower osmolarity than the cell itself
I)an ionic compound which attracts water molecules from the atmosphere
J)a solution in which more solute is dissolved than predicted for that particular temperature
K)a substance which does not dissociate in solution and therefore does not conduct electricity
L)a solution in which no more solute will dissolve and in which excess solute is visible in the container
M)refers to a solution having a lower osmolarity than 30.0 Osmol,the osmolarity of blood serum 
A) a solution in which more solute can be dissolved 
B) the shrinking of a red blood cell when placed in a solution of greater osmolarity than the cell itself 
C) refers to a solution having a greater osmolarity than 0.30 Osmol,the osmolarity of normal red blood cells 
D) refers to two solutions having the same osmolarity 
E) a substance which dissociates completely in solution,providing a relatively large number of ions to conduct electricity
F)an ionic compound which holds water molecules within its crystalline structure
G)a substance which partially dissociates in solution,providing a relatively small number of ions to conduct electricity
H)the swelling and bursting of a red blood cell when placed in a solution of lower osmolarity than the cell itself
I)an ionic compound which attracts water molecules from the atmosphere
J)a solution in which more solute is dissolved than predicted for that particular temperature
K)a substance which does not dissociate in solution and therefore does not conduct electricity
L)a solution in which no more solute will dissolve and in which excess solute is visible in the container
M)refers to a solution having a lower osmolarity than 30.0 Osmol,the osmolarity of blood serum

Question 6

How many moles of solute are present in 12.0 L of 3.00 M HCl?

Accepted Answer

A) 36.0 mol 
B) 4.00 mol 
C) 0.250 mol 
D) 3.00 mol 
E) 0.750 mol 
A) 36.0 mol 
B) 4.00 mol 
C) 0.250 mol 
D) 3.00 mol 
E) 0.750 mol

Question 7

Which aqueous solution will have the lowest freezing point?

Accepted Answer

A) 0.60 molal sucrose 
B) 0.50 molal KF 
C) 0.60 molal glucose 
D) 0.24 molal FeI3 
A) 0.60 molal sucrose 
B) 0.50 molal KF 
C) 0.60 molal glucose 
D) 0.24 molal FeI3

Question 8

Match the following.
-hypotonic

Accepted Answer

A) a solution in which more solute can be dissolved 
B) the shrinking of a red blood cell when placed in a solution of greater osmolarity than the cell itself 
C) refers to a solution having a greater osmolarity than 0.30 Osmol,the osmolarity of normal red blood cells 
D) refers to two solutions having the same osmolarity 
E) a substance which dissociates completely in solution,providing a relatively large number of ions to conduct electricity
F)an ionic compound which holds water molecules within its crystalline structure
G)a substance which partially dissociates in solution,providing a relatively small number of ions to conduct electricity
H)the swelling and bursting of a red blood cell when placed in a solution of lower osmolarity than the cell itself
I)an ionic compound which attracts water molecules from the atmosphere
J)a solution in which more solute is dissolved than predicted for that particular temperature
K)a substance which does not dissociate in solution and therefore does not conduct electricity
L)a solution in which no more solute will dissolve and in which excess solute is visible in the container
M)refers to a solution having a lower osmolarity than 30.0 Osmol,the osmolarity of blood serum 
A) a solution in which more solute can be dissolved 
B) the shrinking of a red blood cell when placed in a solution of greater osmolarity than the cell itself 
C) refers to a solution having a greater osmolarity than 0.30 Osmol,the osmolarity of normal red blood cells 
D) refers to two solutions having the same osmolarity 
E) a substance which dissociates completely in solution,providing a relatively large number of ions to conduct electricity
F)an ionic compound which holds water molecules within its crystalline structure
G)a substance which partially dissociates in solution,providing a relatively small number of ions to conduct electricity
H)the swelling and bursting of a red blood cell when placed in a solution of lower osmolarity than the cell itself
I)an ionic compound which attracts water molecules from the atmosphere
J)a solution in which more solute is dissolved than predicted for that particular temperature
K)a substance which does not dissociate in solution and therefore does not conduct electricity
L)a solution in which no more solute will dissolve and in which excess solute is visible in the container
M)refers to a solution having a lower osmolarity than 30.0 Osmol,the osmolarity of blood serum

Question 9

How many mL of a 0.200 M KOH solution contains 10.0 g of KOH?

Accepted Answer

A) 11.2 mL 
B) 50.0 mL 
C) 178 mL 
D) 281 mL 
E) 891 mL 
A) 11.2 mL 
B) 50.0 mL 
C) 178 mL 
D) 281 mL 
E) 891 mL

Question 10

Which solution is the most concentrated? Each choice refers to the same solute and solvent.

Accepted Answer

A) 2.4 g solute in 2 mL solution 
B) 2.4 g solute in 5 mL solution 
C) 20 g solute in 50 mL solution 
D) 30 g solute in 150 mL solution 
E) 50 g solute in 175 mL solution 
A) 2.4 g solute in 2 mL solution 
B) 2.4 g solute in 5 mL solution 
C) 20 g solute in 50 mL solution 
D) 30 g solute in 150 mL solution 
E) 50 g solute in 175 mL solution

Question 11

What is the molarity of a solution prepared by dissolving 10.0 g of acetone,C3H6O,in enough water to make 250.mL of solution?

Accepted Answer

A) 0.172 M 
B) 0.689 M 
C) 0.250 M 
D) 0.0430 M 
E) 0.0160 M 
A) 0.172 M 
B) 0.689 M 
C) 0.250 M 
D) 0.0430 M 
E) 0.0160 M

Question 12

Which has the lowest boiling point?

Accepted Answer

A) 0.1 M Na2SO4 
B) 0.1 M glucose,C6H12O6 
C) 0.1 M MgCl2 
D) 0.1 M Al(NO3)3 
E) pure water 
A) 0.1 M Na2SO4 
B) 0.1 M glucose,C6H12O6 
C) 0.1 M MgCl2 
D) 0.1 M Al(NO3)3 
E) pure water

Question 13

What is the molarity of a solution prepared by dissolving 1.25 mol of AgNO3 in enough water to make 625 mL of solution?

Accepted Answer

A) 2.00 M 
B) 0.00200 M 
C) 0.500 M 
D) 0.0118 M 
E) 0.340 M 
A) 2.00 M 
B) 0.00200 M 
C) 0.500 M 
D) 0.0118 M 
E) 0.340 M

Question 14

Which information is necessary to determine the molarity of a solution if the chemical formula of the solute is known?

Accepted Answer

A) only the mass of solute dissolved 
B) only the volume of solvent used 
C) the molar mass of both the solute and the solvent used 
D) the mass of solute dissolved and the volume of solvent added 
E) the mass of solute dissolved and the final volume of the solution 
A) only the mass of solute dissolved 
B) only the volume of solvent used 
C) the molar mass of both the solute and the solvent used 
D) the mass of solute dissolved and the volume of solvent added 
E) the mass of solute dissolved and the final volume of the solution

Question 15

If "A" contains 2% NaCl and is separated by a semipermeable membrane from "B" which contains 10% NaCl,which event will occur?

Accepted Answer

A) NaCl will flow from "A" to "B". 
B) NaCl will flow from "B" to "A". 
C) Water will flow from "A" to "B". 
D) Water will flow from "B" to "A". 
E) none of the above 
A) NaCl will flow from "A" to "B". 
B) NaCl will flow from "B" to "A". 
C) Water will flow from "A" to "B". 
D) Water will flow from "B" to "A". 
E) none of the above

Question 16

In a mixture of 5 mL water,10 mL alcohol,and 50 mL acetone the solvent(s)is(are)________.

Accepted Answer

A) acetone 
B) alcohol 
C) water 
D) acetone and alcohol 
E) alcohol and water 
A) acetone 
B) alcohol 
C) water 
D) acetone and alcohol 
E) alcohol and water

Question 17

What is the final concentration of a solution prepared by using 75.0 mL of 18.0 M H2SO4 to prepare 500.mL of solution?

Accepted Answer

A) 8.33 × 10-3 M 
B) 1.20 M 
C) 2.70 M 
D) 2.35 M 
E) 15.7 M 
A) 8.33 × 10-3 M 
B) 1.20 M 
C) 2.70 M 
D) 2.35 M 
E) 15.7 M

Question 18

Match the following.
-crenation

Accepted Answer

A) a solution in which more solute can be dissolved 
B) the shrinking of a red blood cell when placed in a solution of greater osmolarity than the cell itself 
C) refers to a solution having a greater osmolarity than 0.30 Osmol,the osmolarity of normal red blood cells 
D) refers to two solutions having the same osmolarity 
E) a substance which dissociates completely in solution,providing a relatively large number of ions to conduct electricity
F)an ionic compound which holds water molecules within its crystalline structure
G)a substance which partially dissociates in solution,providing a relatively small number of ions to conduct electricity
H)the swelling and bursting of a red blood cell when placed in a solution of lower osmolarity than the cell itself
I)an ionic compound which attracts water molecules from the atmosphere
J)a solution in which more solute is dissolved than predicted for that particular temperature
K)a substance which does not dissociate in solution and therefore does not conduct electricity
L)a solution in which no more solute will dissolve and in which excess solute is visible in the container
M)refers to a solution having a lower osmolarity than 30.0 Osmol,the osmolarity of blood serum 
A) a solution in which more solute can be dissolved 
B) the shrinking of a red blood cell when placed in a solution of greater osmolarity than the cell itself 
C) refers to a solution having a greater osmolarity than 0.30 Osmol,the osmolarity of normal red blood cells 
D) refers to two solutions having the same osmolarity 
E) a substance which dissociates completely in solution,providing a relatively large number of ions to conduct electricity
F)an ionic compound which holds water molecules within its crystalline structure
G)a substance which partially dissociates in solution,providing a relatively small number of ions to conduct electricity
H)the swelling and bursting of a red blood cell when placed in a solution of lower osmolarity than the cell itself
I)an ionic compound which attracts water molecules from the atmosphere
J)a solution in which more solute is dissolved than predicted for that particular temperature
K)a substance which does not dissociate in solution and therefore does not conduct electricity
L)a solution in which no more solute will dissolve and in which excess solute is visible in the container
M)refers to a solution having a lower osmolarity than 30.0 Osmol,the osmolarity of blood serum

Question 19

Normal saline is 0.920% (w/v)NaCl in water.How many grams of NaCl are needed to prepare 15.0 L of normal saline?

Accepted Answer

A) 1.38 g 
B) 16.3 g 
C) 53.8 g 
D) 138 g 
E) 807 g 
A) 1.38 g 
B) 16.3 g 
C) 53.8 g 
D) 138 g 
E) 807 g

Question 20

Calculate the concentration of nitrogen gas in water with a nitrogen gas at a partial pressure of 0.826 atm above it.Henry's law constant for nitrogen in water is 6.8 × 10-4 mol/L-atm.

Accepted Answer

A) 5.6 × 10-4 M 
B) 8.2 × 10-3 M 
C) 1.2 × 103 M 
D) 0.43 M 
A) 5.6 × 10-4 M 
B) 8.2 × 10-3 M 
C) 1.2 × 103 M 
D) 0.43 M

Exam 9: Solutions

How much NaOH is present in a 75.0 mL sample of a 5.00% (w/v)solution?

What is the molarity of a solution prepared by dissolving 1.25 mol AgNO3 in enough water to make 2.00 × 103 mL of solution?

All of the water in a 0.200 M solution of NaCl was evaporated and 0.150 mole of NaCl was obtained.What was the original volume of the sample?

How many g of NaOH is needed to make 350.mL of a 2.50% (w/v)solution?

Match the following. -hydrate

How many moles of solute are present in 12.0 L of 3.00 M HCl?

Which aqueous solution will have the lowest freezing point?

Match the following. -hypotonic

How many mL of a 0.200 M KOH solution contains 10.0 g of KOH?

Which solution is the most concentrated? Each choice refers to the same solute and solvent.

What is the molarity of a solution prepared by dissolving 10.0 g of acetone,C3H6O,in enough water to make 250.mL of solution?

Which has the lowest boiling point?

What is the molarity of a solution prepared by dissolving 1.25 mol of AgNO3 in enough water to make 625 mL of solution?

Which information is necessary to determine the molarity of a solution if the chemical formula of the solute is known?

If "A" contains 2% NaCl and is separated by a semipermeable membrane from "B" which contains 10% NaCl,which event will occur?

In a mixture of 5 mL water,10 mL alcohol,and 50 mL acetone the solvent(s)is(are)________.

What is the final concentration of a solution prepared by using 75.0 mL of 18.0 M H2SO4 to prepare 500.mL of solution?

Match the following. -crenation

Normal saline is 0.920% (w/v)NaCl in water.How many grams of NaCl are needed to prepare 15.0 L of normal saline?

Calculate the concentration of nitrogen gas in water with a nitrogen gas at a partial pressure of 0.826 atm above it.Henry's law constant for nitrogen in water is 6.8 × 10-4 mol/L-atm.

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What is the molarity of a solution prepared by dissolving 1.25 mol AgNO₃ in enough water to make 2.00 × 10³ mL of solution?

What is the molarity of a solution prepared by dissolving 10.0 g of acetone,C₃H₆O,in enough water to make 250.mL of solution?

What is the molarity of a solution prepared by dissolving 1.25 mol of AgNO₃ in enough water to make 625 mL of solution?

What is the final concentration of a solution prepared by using 75.0 mL of 18.0 M H₂SO₄ to prepare 500.mL of solution?

Calculate the concentration of nitrogen gas in water with a nitrogen gas at a partial pressure of 0.826 atm above it.Henry's law constant for nitrogen in water is 6.8 × 10^-4 mol/L-atm.