Question 1

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?

Accepted Answer

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

Question 2

When KCl dissolves in water

Accepted Answer

A)  the Cl- ions are attracted to dissolved K+ ions. 
B)  the Cl- ions are attracted to the partially negative oxygen atoms of the water molecule. 
C)  the K+ ions are attracted to Cl- ions on the KCl crystal. 
D)  the K+ ions are attracted to the partially negative oxygen atoms of the water molecule. 
E)  the K+ ions are attracted to the partially positive hydrogen atoms of the water molecule. 
A)  the Cl- ions are attracted to dissolved K+ ions. 
B)  the Cl- ions are attracted to the partially negative oxygen atoms of the water molecule. 
C)  the K+ ions are attracted to Cl- ions on the KCl crystal. 
D)  the K+ ions are attracted to the partially negative oxygen atoms of the water molecule. 
E)  the K+ ions are attracted to the partially positive hydrogen atoms of the water molecule.

Question 3

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

Accepted Answer

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

Question 4

A hydrogen bond is

Accepted Answer

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

Question 5

What is the molarity of a solution that contains 3.25 moles of NaNO₃ in 250. mL of solution?

Accepted Answer

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

Question 6

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

Accepted Answer

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

Question 7

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

Accepted Answer

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

Question 8

Match the type of mixture with the appropriate characteristics.
-a homogeneous mixture in which suspended particles cannot pass through a semipermeable membrane

Accepted Answer

A) suspension 
B) solution 
C) colloid 
A) suspension 
B) solution 
C) colloid

Question 9

A homogeneous mixture that does not settle out upon standing is

Accepted Answer

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

Question 10

Compare the osmotic pressure of these solutions to the osmotic pressure of red blood cells.
-NaCl, a strong electrolyte

Accepted Answer

A) both 
B) ions 
C) molecules 
A) both 
B) ions 
C) molecules

Question 11

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?

Accepted Answer

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

Question 12

Match the type of mixture with the appropriate characteristics.
-a mixture whose particles settle on standing

Accepted Answer

A) suspension 
B) solution 
C) colloid 
A) suspension 
B) solution 
C) colloid

Question 13

What is the molarity of a solution that contains 17 g of NH3 in 0.50 L of solution?

Accepted Answer

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

Question 14

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

Accepted Answer

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

Question 15

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

Accepted Answer

A)  0.0400 mL 
B)  25.0 mL 
C)  2.00 mL 
D)  1.00 × 104 mL 
E)  5.00 × 102 mL 
A)  0.0400 mL 
B)  25.0 mL 
C)  2.00 mL 
D)  1.00 × 104 mL 
E)  5.00 × 102 mL

Question 16

Compare the osmotic pressure of these solutions to the osmotic pressure of red blood cells.
-0.9% NaCl

Accepted Answer

A)  hypertonic 
B)  hypotonic 
C)  isotonic 
A)  hypertonic 
B)  hypotonic 
C)  isotonic

Question 17

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

Accepted Answer

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

Question 18

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

Accepted Answer

A)  25 mL 
B)  75 mL 
C)  33 mL 
D)  19 mL 
E)  3.0 × 102 mL 
A)  25 mL 
B)  75 mL 
C)  33 mL 
D)  19 mL 
E)  3.0 × 102 mL

Question 19

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

Accepted Answer

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

Exam 8: Solutions

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?

When KCl dissolves in water

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

A hydrogen bond is

What is the molarity of a solution that contains 3.25 moles of NaNO₃ in 250. mL of solution?

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

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

Match the type of mixture with the appropriate characteristics. -a homogeneous mixture in which suspended particles cannot pass through a semipermeable membrane

A homogeneous mixture that does not settle out upon standing is

Compare the osmotic pressure of these solutions to the osmotic pressure of red blood cells. -NaCl, a strong electrolyte

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?

Match the type of mixture with the appropriate characteristics. -a mixture whose particles settle on standing

What is the molarity of a solution that contains 17 g of NH3 in 0.50 L of solution?

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

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

Compare the osmotic pressure of these solutions to the osmotic pressure of red blood cells. -0.9% NaCl

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

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

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

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What is the molarity of a solution that contains 17 g of NH₃ in 0.50 L of solution?

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