Question 1

Calculate the freezing point of a solution containing 5.0 grams of KCl and 550.0 grams of water. The molal-freezing-point-depression constant (Kf)for water is 1.86°C/m.

Accepted Answer

A) -0.45°C 
B) +0.45°C 
C) -0.23°C 
D) +0.23°C 
E) 1.23°C

Question 2

Pairs of liquids that will mix in all proportions are called __________ liquids.

Accepted Answer

A) miscible 
B) unsaturated 
C) polar liquids 
D) saturated 
E) supersaturated

Question 3

At 20°C, a 0.376 M aqueous solution of ammonium chloride has a density of 1.0045 g/mL. What is the mass % of ammonium chloride in the solution? The formula weight of NH4Cl is 53.50 g/mol.

Accepted Answer

A) 0.381 
B) 0.705 
C) 0.374 
D) 2.68 
E) 2.00

Question 4

George is making spaghetti for dinner. He places 4.01 kg of water in a pan and brings it to a boil. Before adding the pasta, he adds 58 g of table salt (NaCl)to the water and again brings it to a boil. The temperature of the salty, boiling water is __________°C. Assume a pressure of 1.00 atm and negligible evaporation of water. Kb for water is 0.52°C/m.

Accepted Answer

A) 99.87 
B) 100.26 
C) 100.13 
D) 99.74 
E) 100.00

Question 5

The process of solute particles being surrounded by solvent particles is known as __________.

Accepted Answer

A) salutation 
B) agglomeration 
C) solvation 
D) agglutination 
E) dehydration

Question 6

Which one of the following solutes has a limiting van't Hoff factor (i)of 3 when dissolved in water?

Accepted Answer

A) KNO3 
B) CH3OH 
C) CCl4 
D) Na2SO4 
E) sucrose

Question 7

A 1.35 m aqueous solution of compound X had a boiling point of 101.4°C. Which one of the following could be compound X? The boiling point elevation constant for water is 0.52°C/m.

Accepted Answer

A) CH3CH2OH 
B) C6H12O6 
C) Na3PO4 
D) KCl 
E) CaCl2

Question 8

A solution is prepared by dissolving 0.60 g of nicotine (a nonelectrolyte)in water to make 12 mL of solution. The osmotic pressure of the solution is 7.55 atm at 25 °C. The molecular weight of nicotine is ________g/mol.

Accepted Answer

A) 28 
B) 43 
C) 50 
D) 160 
E) 0.60

Question 9

A solution is prepared by dissolving 23.7 g of CaCl2 in 375 g of water. The density of the resulting solution is 1.05 g/mL. The concentration of CaCl2 in this solution is __________ molal.

Accepted Answer

A) 0.214 
B) 0.569 
C) 5.70 
D) 63.2 
E) 1.76

Question 10

A solution contains 15 ppm of benzene. The density of the solution is 1.00 g/mL. This means that __________.

Accepted Answer

A) there are 15 mg of benzene in 1.0 L of this solution 
B) 100 g of the solution contains 15 g of benzene 
C) 100 g of the solution contains 15 mg of benzene 
D) the solution is 15% by mass of benzene 
E) the molarity of the solution is 15

Question 11

Calculate the mole fraction of nitric acid of a 17.5% (by mass)aqueous solution of nitric acid.

Accepted Answer

A) 0.0607 
B) 0.0572 
C) 0.278 
D) 3.37 
E) 1.75

Question 12

The value of the boiling-point-elevation constant (Kb)depends on the identity of the solvent.

Accepted Answer

A) True 
 B)False

Question 13

For a dilute aqueous solution, a concentration of 1 ppm also corresponds to a concentration of 1 __________ per liter of solution.

Accepted Answer

The answer of For a dilute aqueous solution, a concentration...

Question 14

The Procter & Gamble Company product called olestratm is formed by combining a sugar molecule with __________.

Accepted Answer

A) alcohols 
B) vitamin A 
C) fatty acids 
D) protein 
E) cholesterol

Question 15

What is the molality of sodium chloride in solution that is 13.0% by mass sodium chloride and that has a density of 1.10 g/mL?

Accepted Answer

A) 2.23 
B) 1.30 
C) 2.56 
D) 2.03 
E) 1.10

Question 16

The concentration (M)of HCl in a solution prepared by dissolving 5.5 g of HCl in 200 g of C2H6O is __________ M. The density of the solution is 0.79 g/mL.

Accepted Answer

A) 21 
B) 0.93 
C) 0.58 
D) 6.0 × 10-4 
E) 1.72

Question 17

Which one of the following is least soluble in water?

Accepted Answer

A) CH3OH 
B) CH3CH2CH2OH 
C) CH3CH2OH 
D) CH3CH2CH2CH2OH 
E) CH3CH2CH2CH2CH2OH

Question 18

Physical properties of a solution that depend on the quantity of the solute particles present, but not the kind or identity of the particles, are termed __________ properties.

Accepted Answer

The answer of Physical properties of a solution that depend...

Question 19

What is the freezing point (°C)of a solution prepared by dissolving 11.3 g of Ca(NO3)2 (formula weight = 164 g/mol)in 115 g of water? The molal freezing point depression constant for water is 1.86°C/m.

Accepted Answer

A) -3.34 
B) -1.11 
C) 3.34 
D) 1.11 
E) 0.00

Question 20

Calculate the molarity of a 25.4% (by mass)aqueous solution of phosphoric acid (H3PO4).

Accepted Answer

A) 2.59 m 
B) 3.47 m 
C) 4.45 m 
D) 25.4 m 
E) The density of the solution is needed to solve the problem.

Exam 13: Properties of Solutions

Calculate the freezing point of a solution containing 5.0 grams of KCl and 550.0 grams of water. The molal-freezing-point-depression constant (K_f) for water is 1.86°C/m.

Pairs of liquids that will mix in all proportions are called __________ liquids.

At 20°C, a 0.376 M aqueous solution of ammonium chloride has a density of 1.0045 g/mL. What is the mass % of ammonium chloride in the solution? The formula weight of NH₄Cl is 53.50 g/mol.

The process of solute particles being surrounded by solvent particles is known as __________.

Which one of the following solutes has a limiting van't Hoff factor (i) of 3 when dissolved in water?

A 1.35 m aqueous solution of compound X had a boiling point of 101.4°C. Which one of the following could be compound X? The boiling point elevation constant for water is 0.52°C/m.

A solution is prepared by dissolving 0.60 g of nicotine (a nonelectrolyte) in water to make 12 mL of solution. The osmotic pressure of the solution is 7.55 atm at 25 °C. The molecular weight of nicotine is ________g/mol.

A solution is prepared by dissolving 23.7 g of CaCl₂ in 375 g of water. The density of the resulting solution is 1.05 g/mL. The concentration of CaCl₂ in this solution is __________ molal.

A solution contains 15 ppm of benzene. The density of the solution is 1.00 g/mL. This means that __________.

Calculate the mole fraction of nitric acid of a 17.5% (by mass) aqueous solution of nitric acid.

The value of the boiling-point-elevation constant (K_b)depends on the identity of the solvent.

For a dilute aqueous solution, a concentration of 1 ppm also corresponds to a concentration of 1 __________ per liter of solution.

The Procter & Gamble Company product called olestra^tm is formed by combining a sugar molecule with __________.

What is the molality of sodium chloride in solution that is 13.0% by mass sodium chloride and that has a density of 1.10 g/mL?

The concentration (M) of HCl in a solution prepared by dissolving 5.5 g of HCl in 200 g of C₂H₆O is __________ M. The density of the solution is 0.79 g/mL.

Which one of the following is least soluble in water?

Physical properties of a solution that depend on the quantity of the solute particles present, but not the kind or identity of the particles, are termed __________ properties.

What is the freezing point (°C) of a solution prepared by dissolving 11.3 g of Ca(NO₃) ₂ (formula weight = 164 g/mol) in 115 g of water? The molal freezing point depression constant for water is 1.86°C/m.

Calculate the molarity of a 25.4% (by mass) aqueous solution of phosphoric acid (H₃PO₄) .

Exam 13: Properties of Solutions

Calculate the freezing point of a solution containing 5.0 grams of KCl and 550.0 grams of water. The molal-freezing-point-depression constant (Kf) for water is 1.86°C/m.

Pairs of liquids that will mix in all proportions are called __________ liquids.

At 20°C, a 0.376 M aqueous solution of ammonium chloride has a density of 1.0045 g/mL. What is the mass % of ammonium chloride in the solution? The formula weight of NH4Cl is 53.50 g/mol.

The process of solute particles being surrounded by solvent particles is known as __________.

Which one of the following solutes has a limiting van't Hoff factor (i) of 3 when dissolved in water?

A 1.35 m aqueous solution of compound X had a boiling point of 101.4°C. Which one of the following could be compound X? The boiling point elevation constant for water is 0.52°C/m.

A solution is prepared by dissolving 0.60 g of nicotine (a nonelectrolyte) in water to make 12 mL of solution. The osmotic pressure of the solution is 7.55 atm at 25 °C. The molecular weight of nicotine is ________g/mol.

A solution is prepared by dissolving 23.7 g of CaCl2 in 375 g of water. The density of the resulting solution is 1.05 g/mL. The concentration of CaCl2 in this solution is __________ molal.

A solution contains 15 ppm of benzene. The density of the solution is 1.00 g/mL. This means that __________.

Calculate the mole fraction of nitric acid of a 17.5% (by mass) aqueous solution of nitric acid.

The value of the boiling-point-elevation constant (Kb)depends on the identity of the solvent.

For a dilute aqueous solution, a concentration of 1 ppm also corresponds to a concentration of 1 __________ per liter of solution.

The Procter & Gamble Company product called olestratm is formed by combining a sugar molecule with __________.

What is the molality of sodium chloride in solution that is 13.0% by mass sodium chloride and that has a density of 1.10 g/mL?

The concentration (M) of HCl in a solution prepared by dissolving 5.5 g of HCl in 200 g of C2H6O is __________ M. The density of the solution is 0.79 g/mL.

Which one of the following is least soluble in water?

Physical properties of a solution that depend on the quantity of the solute particles present, but not the kind or identity of the particles, are termed __________ properties.

What is the freezing point (°C) of a solution prepared by dissolving 11.3 g of Ca(NO3) 2 (formula weight = 164 g/mol) in 115 g of water? The molal freezing point depression constant for water is 1.86°C/m.

Calculate the molarity of a 25.4% (by mass) aqueous solution of phosphoric acid (H3PO4) .

Calculate the freezing point of a solution containing 5.0 grams of KCl and 550.0 grams of water. The molal-freezing-point-depression constant (K_f) for water is 1.86°C/m.

At 20°C, a 0.376 M aqueous solution of ammonium chloride has a density of 1.0045 g/mL. What is the mass % of ammonium chloride in the solution? The formula weight of NH₄Cl is 53.50 g/mol.

A solution is prepared by dissolving 23.7 g of CaCl₂ in 375 g of water. The density of the resulting solution is 1.05 g/mL. The concentration of CaCl₂ in this solution is __________ molal.

The value of the boiling-point-elevation constant (K_b)depends on the identity of the solvent.

The Procter & Gamble Company product called olestra^tm is formed by combining a sugar molecule with __________.

The concentration (M) of HCl in a solution prepared by dissolving 5.5 g of HCl in 200 g of C₂H₆O is __________ M. The density of the solution is 0.79 g/mL.

What is the freezing point (°C) of a solution prepared by dissolving 11.3 g of Ca(NO₃) ₂ (formula weight = 164 g/mol) in 115 g of water? The molal freezing point depression constant for water is 1.86°C/m.

Calculate the molarity of a 25.4% (by mass) aqueous solution of phosphoric acid (H₃PO₄) .