Question 1

How many moles of CaCl₂ are in 250 mL of a 3.0 M of CaCl₂ solution?

Accepted Answer

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

Question 2

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

Accepted Answer

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

Question 3

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

Accepted Answer

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

Question 4

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 MF) D) and E)
G) C) and D)

Question 5

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 LF) A) and C)
G) A) and B)

Question 6

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%.F) All of the above
G) A) and E)

Question 7

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?

Accepted Answer

A)  4%
B)  10%
C)  Neither exerts osmotic pressure.
D)  They exert equal osmotic pressures.
E)  They exert opposite osmotic pressures.F) None of the above
G) A) and D)

Question 8

What is the osmolarity of a solution made by dissolving 25.0 g of the strong electrolyte KCl in 1.0 L of solution?

Accepted Answer

A)  0.168 Osm
B)  0.335 Osm
C)  0.250 Osm
D)  0.670 Osm
E)  1.34 OsmF) A) and B)
G) C) and E)

Question 9

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

Accepted Answer

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

Question 10

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

Accepted Answer

A)  weak electrolyte.
B)  nonelectrolyte.
C)  semiconductor.
D)  nonconductor.
E)  strong electrolyte.F) None of the above
G) A) and E)

Question 11

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.F) A) and B)
G) A) and C)

Question 12

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

Accepted Answer

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

Question 13

What is the concentration, in mass percent, of a solution prepared from 50.0 g NaCl and 150.0 g of water?

Accepted Answer

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

Question 14

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

Accepted Answer

A)  AgCl
B)  Cu(OH) ₂
C)  LiCl
D)  CaSO₄
E)  PbCO₃F) C) and D)
G) C) and E)

Question 15

Which one of the following compounds will NOT be soluble in water?

Accepted Answer

A)  NaOH
B)  PbS
C)  K₂SO₄
D)  LiNO₃
E)  MgCl₂F) B) and E)
G) B) and C)

Question 16

For the question(s)  that follow, consider a 4% starch solution and a 10% starch solution separated by a semipermeable membrane.
-The process that occurs in this system is

Accepted Answer

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

Question 17

How many mL of 0.246 M Pb(NO₃) ₂ are needed to react with 36.0 mL of 0.322 M KCl ?
 2KCl(aq)  + Pb(NO₃) 2(aq)  → 2KNO₃(aq)  + PbCl₂(s)

Accepted Answer

A)  36.0 mL
B)  18.0 mL
C)  72.0 mL
D)  47.1 mL
E)  23.6 mLF) All of the above
G) B) and D)

Question 18

In a solution, the solvent

Accepted Answer

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

Question 19

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

Accepted Answer

A)  18 mL
B)  0.13 mL
C)  13 mL
D)  120 mL
E)  8.0 × 102 mLF) A) and E)
G) A) and B)

Question 20

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 mLF) A) and B)
G) C) and D)

Exam 9: Solutions

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

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

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For the question(s) that follow, consider a 4% starch solution and a 10% starch solution separated by a semipermeable membrane. -The process that occurs in this system is

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In a solution, the solvent

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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?

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How many moles of CaCl₂ are in 250 mL of a 3.0 M of CaCl₂ solution?

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

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

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

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

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

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

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How many mL of 0.246 M Pb(NO₃) ₂ are needed to react with 36.0 mL of 0.322 M KCl ? 2KCl(aq) + Pb(NO₃) 2(aq) → 2KNO₃(aq) + PbCl₂(s)

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

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

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Which one of the following compounds will NOT be soluble in water?

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What is the concentration, in mass percent, of a solution prepared from 50.0 g NaCl and 150.0 g of water?

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

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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?

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What is the osmolarity of a solution made by dissolving 25.0 g of the strong electrolyte KCl in 1.0 L of solution?

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How many mL of 0.246 M Pb(NO₃) ₂ are needed to react with 36.0 mL of 0.322 M KCl ? 2KCl(aq) + Pb(NO₃) ₂(aq) → 2KNO₃(aq) + PbCl₂(s)

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