Question 1

Only solids dissolve in water to form solutions.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following would increase the solubility of solid NaCl in water ________.

Accepted Answer

A)  decreasing the temperature of the solution
B)  increasing the temperature of the solution
C)  decreasing the pressure of the solution
D)  increasing the pressure of the solutionE) All of the above
F) A) and D)

Question 3

Which pair of compounds will form a solution?

Accepted Answer

A)  Benzene (C6H6) and hexane (C6H14) 
B)  Na2SO4 and benzene (C6H6) 
C)  NaCl and hexane (C6H14) 
D)  H2O and CCl4
E)  More than one of the combinations above will form solutions.F) A) and E)
G) B) and D)

Question 4

How many grams of glucose (C6H12O6) are contained in 555 mL of a 1.77 M glucose solution?

Accepted Answer

A)  0.982 g C6H12O6
B)  177 g C6H12O6
C)  0.555 g C6H12O6
D)  0.177 g C6H12O6E) A) and C)
F) B) and D)

Question 5

Solubility is often summed up in three words: "________".

Accepted Answer

The answer of Solubility is often summed up in three...

Question 6

An unknown amount of water is added to 75 mL of a 3.5 M aqueous glucose solution. What can be said about the concentration of the resulting solution?

Accepted Answer

A)  The concentration of the resultant glucose solution will be less than 3.5 M.
B)  The concentration of the resultant glucose solution will be greater than 3.5 M.
C)  The concentration of the resultant glucose solution will remain the same because the amount of glucose has not changed.
D)  It is impossible to say anything about the concentration of the resultant glucose solution because the amount of added water has not been provided.E) A) and D)
F) B) and D)

Question 7

The maximum level of lead allowed in drinking water is 15 mg/kg. What is this concentration in units of parts per million?

Accepted Answer

A)  15 ppm
B)  1.5 × 10-2 ppm
C)  1.5 × 104 ppm
D)  3.1 ppmE) A) and B)
F) B) and C)

Question 8

Which solution has the highest boiling point?

Accepted Answer

A)  A solution formed by dissolving 0.75 mol of KCl in 1.00 kg of water.
B)  A solution formed by dissolving 0.75 mol of glucose (C6H12O6) in 1.00 kg of water.
C)  A solution formed by dissolving 0.75 mol of Ca(NO3) 2 in 1.00 kg of water.
D)  A solution formed by dissolving 0.75 mol of Na3PO4 in 1.00 kg of water.
E)  All of the solutions described have the same boiling point.F) B) and E)
G) C) and E)

Question 9

The solubility of Ba(NO3)2 in water is lower at 25 °C than at 50 °C.

Accepted Answer

A) True 
 B)False

Question 10

Methanol (CH3OH)is soluble in water.

Accepted Answer

A) True 
 B)False

Question 11

The solubility of KI in water at 20 °C is 140 g KI/100 g H2O. If 160 g of KI is mixed with 150 g of water,all of the KI will dissolve and the solution that results will be unsaturated.

Accepted Answer

A) True 
 B)False

Question 12

The melting point of a solution prepared from 2.00 moles of NaCl in 1.00kg of water is ______ºC.

Accepted Answer

The answer of The melting point of a solution prepared...

Question 13

Ethylene glycol is more soluble in water than propane.

Accepted Answer

A) True 
 B)False

Question 14

Magnesium hydroxide can be made by the reaction shown below. If a chemist requires 0.725 moles of NaOH for this reaction,what volume of a 1.50 M NaOH solution is needed to provide this amount? MgCl2(aq) + 2 NaOH(aq) → Mg(OH) 2(s) + 2 NaCl(aq)

Accepted Answer

A)  0.483 L of a 1.50 M NaOH solution
B)  0.967 L of a 1.50 M NaOH solution
C)  1.09 L of a 1.50 M NaOH solution
D)  967 mL of a 1.50 M NaOH solutionE) A) and B)
F) A) and C)

Question 15

Which is not an example of a solution?

Accepted Answer

A)  A dental filling
B)  Chicken noodle soup
C)  Gasoline
D)  Tap waterE) B) and D)
F) B) and C)

Question 16

The boiling point of a solution that contains 0.64 mol of Mg(NO3)2 in 1.00 kg of water is 100.98 °C.

Accepted Answer

A) True 
 B)False

Question 17

The ionic compound CaCO3 is soluble in water.

Accepted Answer

A) True 
 B)False

Question 18

The presence of a solute reduces the vapor pressure of the solvent above the solution,raising its boiling point.

Accepted Answer

A) True 
 B)False

Question 19

A saline solution used in intravenous drips for patients who cannot take oral fluids contains 0.92% (w/v) NaCl in water. What volume of the saline solution must be administered to the patient in order to deliver 7.7 g of NaCl?

Accepted Answer

A)  8.4 mL of saline solution
B)  840 mL of saline solution
C)  7.1 mL of saline solution
D)  140 mL of saline solutionE) B) and C)
F) None of the above

Question 20

________ is the passage of water and small molecules across a semipermeable membrane from a solution of low solute concentration to a solution of higher solute concentration.

Accepted Answer

The answer of ________ is the passage of water and...

Exam 8: Solutions

________ is the passage of water and small molecules across a semipermeable membrane from a solution of low solute concentration to a solution of higher solute concentration.

Correct AnswerverifiedShow Answer

The boiling point of a solution that contains 0.64 mol of Mg(NO3)2 in 1.00 kg of water is 100.98 °C.

Correct AnswerverifiedShow Answer

Only solids dissolve in water to form solutions.

Correct AnswerverifiedShow Answer

An unknown amount of water is added to 75 mL of a 3.5 M aqueous glucose solution. What can be said about the concentration of the resulting solution?

Correct AnswerverifiedShow Answer

Magnesium hydroxide can be made by the reaction shown below. If a chemist requires 0.725 moles of NaOH for this reaction,what volume of a 1.50 M NaOH solution is needed to provide this amount? MgCl2(aq) + 2 NaOH(aq) → Mg(OH) 2(s) + 2 NaCl(aq)

Correct AnswerverifiedShow Answer

How many grams of glucose (C6H12O6) are contained in 555 mL of a 1.77 M glucose solution?

Correct AnswerverifiedShow Answer

The melting point of a solution prepared from 2.00 moles of NaCl in 1.00kg of water is ______ºC.

Correct AnswerverifiedShow Answer

The solubility of KI in water at 20 °C is 140 g KI/100 g H2O. If 160 g of KI is mixed with 150 g of water,all of the KI will dissolve and the solution that results will be unsaturated.

Correct AnswerverifiedShow Answer

Which pair of compounds will form a solution?

Correct AnswerverifiedShow Answer

Which solution has the highest boiling point?

Correct AnswerverifiedShow Answer

The presence of a solute reduces the vapor pressure of the solvent above the solution,raising its boiling point.

Correct AnswerverifiedShow Answer

Which of the following would increase the solubility of solid NaCl in water ________.

Correct AnswerverifiedShow Answer

Methanol (CH3OH)is soluble in water.

Correct AnswerverifiedShow Answer

Ethylene glycol is more soluble in water than propane.

Correct AnswerverifiedShow Answer

Which is not an example of a solution?

Correct AnswerverifiedShow Answer

The ionic compound CaCO3 is soluble in water.

Correct AnswerverifiedShow Answer

A saline solution used in intravenous drips for patients who cannot take oral fluids contains 0.92% (w/v) NaCl in water. What volume of the saline solution must be administered to the patient in order to deliver 7.7 g of NaCl?

Correct AnswerverifiedShow Answer

Solubility is often summed up in three words: "________".

Correct AnswerverifiedShow Answer

The maximum level of lead allowed in drinking water is 15 mg/kg. What is this concentration in units of parts per million?

Correct AnswerverifiedShow Answer

The solubility of Ba(NO3)2 in water is lower at 25 °C than at 50 °C.

Correct AnswerverifiedShow Answer

Correct Answer
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The boiling point of a solution that contains 0.64 mol of Mg(NO₃)₂ in 1.00 kg of water is 100.98 °C.

Correct Answer
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Correct Answer
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Correct Answer
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Magnesium hydroxide can be made by the reaction shown below. If a chemist requires 0.725 moles of NaOH for this reaction,what volume of a 1.50 M NaOH solution is needed to provide this amount? MgCl₂(aq) + 2 NaOH(aq) → Mg(OH) ₂(s) + 2 NaCl(aq)

Correct Answer
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How many grams of glucose (C₆H₁₂O₆) are contained in 555 mL of a 1.77 M glucose solution?

Correct Answer
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Correct Answer
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The solubility of KI in water at 20 °C is 140 g KI/100 g H₂O. If 160 g of KI is mixed with 150 g of water,all of the KI will dissolve and the solution that results will be unsaturated.

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Methanol (CH₃OH)is soluble in water.

Correct Answer
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Correct Answer
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Correct Answer
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The ionic compound CaCO₃ is soluble in water.

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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The solubility of Ba(NO₃)₂ in water is lower at 25 °C than at 50 °C.

Correct Answer
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