Question 1

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

Accepted Answer

A)  AgBr
B)  Cu(OH) ₂
C)  NH₄Cl
D)  CaCO₃
E)  PbS

Question 2

Water is a polar solvent and hexane (C₆H₁₄)  is a nonpolar solvent. Which of the following correctly describes the solubility of the solute?

Accepted Answer

A)  mineral oil, soluble in water
B)  CaCl₂ , soluble in hexane
C)  NaHCO₃, soluble in water
D)   CCl₄, soluble in water
E)  octane, soluble in water

Question 3

Substances whose particles in solution scatter light and pass through filters but cannot pass through semipermeable membranes are called ________.

Accepted Answer

The answer of Substances whose particles in solution scatter light...

Question 4

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.

Question 5

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

Accepted Answer

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

Question 6

How many grams of PbCl₂ are formed when 25.0 mL of 0.654 M KCl react with Pb(NO₃) ₂ ? 
2KCl(aq)  + Pb(NO₃)  2(aq)  → 2KNO₃(aq)  + PbCl₂(s)

Accepted Answer

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

Question 7

Which solution is isotonic to a red blood cell?

Accepted Answer

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

Question 8

What is the osmolarity of a solution made by dissolving 0.50 mole of the strong electrolyte CaCl₂ in 1.0 L of solution?

Accepted Answer

A)  0.50 Osm
B)  1.0 Osm
C)  1.5 Osm
D)  2.0 Osm
E)  0.0 Osm

Question 9

A red blood cell will undergo hemolysis in

Accepted Answer

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

Question 10

Use the reaction: 2AgNO₃(aq)  + H2SO₄(aq)  → Ag2SO₄(s)  + 2H2O(l) . What volume of 0.123 M AgNO₃(aq)  is needed to form 0.657 g of Ag2SO₄(s) ?

Accepted Answer

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

Question 11

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

Question 12

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

Question 13

When solutions of NaCl and AgNO₃ are mixed,

Accepted Answer

A)  a precipitate of AgCl forms.
B)  a precipitate of NaNO₃Forms.
C)  no precipitate forms.
D)  precipitate of NaNO₃And AgCl form.
E)  a precipitate of AgCl₂Forms.

Question 14

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

Accepted Answer

The answer of A substance that carries an electric current...

Question 15

An increase in the temperature of a solution usually

Accepted Answer

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

Question 16

In the following equation, ________ will form a precipitate. 
NaCl + AgNO₃ → AgCl + NaNO₃

Accepted Answer

The answer of In the following equation, ________ will form...

Question 17

If 100. mL of water is added to 25 mL of 5.0 M NaCl, the final concentration is ________.

Accepted Answer

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

Question 18

Methanol, CH₃OH, can be classified as a ________.

Accepted Answer

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

Question 19

A red blood cell will undergo crenation in

Accepted Answer

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

Question 20

A solution of sodium carbonate, Na2CO₃ , that has a molarity of 0.0100 M contains ________ equivalents of carbonate per liter of the solution.

Accepted Answer

Exam 9: Solutions

When solutions of NaCl and AgNO₃ are mixed,

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A red blood cell will undergo crenation in

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Use the reaction: 2AgNO₃(aq) + H2SO₄(aq) → Ag2SO₄(s) + 2H2O(l) . What volume of 0.123 M AgNO₃(aq) is needed to form 0.657 g of Ag2SO₄(s) ?

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How many grams of PbCl₂ are formed when 25.0 mL of 0.654 M KCl react with Pb(NO₃) ₂ ? 2KCl(aq) + Pb(NO₃) 2(aq) → 2KNO₃(aq) + PbCl₂(s)

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Methanol, CH₃OH, can be classified as a ________.

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Substances whose particles in solution scatter light and pass through filters but cannot pass through semipermeable membranes are called ________.

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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?

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What is the osmolarity of a solution made by dissolving 0.50 mole of the strong electrolyte CaCl₂ in 1.0 L of solution?

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If 100. mL of water is added to 25 mL of 5.0 M NaCl, the final concentration is ________.

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

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A red blood cell will undergo hemolysis in

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

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A solution of sodium carbonate, Na2CO₃ , that has a molarity of 0.0100 M contains ________ equivalents of carbonate per liter of the solution.

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When KCl dissolves in water

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In the following equation, ________ will form a precipitate. NaCl + AgNO₃ → AgCl + NaNO₃

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

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Which solution is isotonic to a red blood cell?

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

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Water is a polar solvent and hexane (C₆H₁₄) is a nonpolar solvent. Which of the following correctly describes the solubility of the solute?

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An increase in the temperature of a solution usually

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Use the reaction: 2AgNO₃(aq) + H₂SO₄(aq) → Ag₂SO₄(s) + 2H₂O(l) . What volume of 0.123 M AgNO₃(aq) is needed to form 0.657 g of Ag₂SO₄(s) ?

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A solution of sodium carbonate, Na₂CO₃ , that has a molarity of 0.0100 M contains ________ equivalents of carbonate per liter of the solution.

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