Question 1

How many grams of a 23.4% by mass NaF solution is needed if you want to have 1.33 moles of NaF?

Accepted Answer

A) 55.9 
B) 31.1 
C) 13.1 
D) 239 
E) none of the above 
A) 55.9 
B) 31.1 
C) 13.1 
D) 239 
E) none of the above

Question 2

Osmotic pressure is:

Accepted Answer

A) the pressure required to stop the flow of solvent from a region of high solute concentration to a region of low solute concentration. 
B) the pressure required to stop the rupture of the semipermeable membrane. 
C) the pressure required to reverse the flow of solvent through a semipermeable membrane during osmosis. 
D) the pressure required to stop the flow of solvent from a region of low solute concentration through a semipermeable membrane into a region of high solute concentration. 
E) none of the above 
A) the pressure required to stop the flow of solvent from a region of high solute concentration to a region of low solute concentration. 
B) the pressure required to stop the rupture of the semipermeable membrane. 
C) the pressure required to reverse the flow of solvent through a semipermeable membrane during osmosis. 
D) the pressure required to stop the flow of solvent from a region of low solute concentration through a semipermeable membrane into a region of high solute concentration. 
E) none of the above

Question 3

What is the molarity of a solution prepared by dissolving 10.7 grams NaI in 0.250L ?

Accepted Answer

A) 42.8 
B) 0.0714 
C) 2.86   
D) 0.286 
E) none of the above 
A) 42.8 
B) 0.0714 
C) 2.86   
D) 0.286 
E) none of the above

Question 4

In order for a solute to dissolve in solution:

Accepted Answer

A) the solute-solvent forces must be greater than the solute-solute forces. 
B) the solute-solute forces must be greater than the solute-solvent forces. 
C) the solute-solvent forces must equal the solute-solute forces. 
D) the polarity of the solute and solvent must be opposite. 
E) none of the above 
A) the solute-solvent forces must be greater than the solute-solute forces. 
B) the solute-solute forces must be greater than the solute-solvent forces. 
C) the solute-solvent forces must equal the solute-solute forces. 
D) the polarity of the solute and solvent must be opposite. 
E) none of the above

Question 5

What is the concentration of sodium chloride in the final solution if   of   BaC  completely reacts and the total volume of the reaction is  , given the reaction:

Accepted Answer

A) 0.226 
B) 0.0259 
C) 0.0519 
D) 0.667 
E) none of the above 
A) 0.226 
B) 0.0259 
C) 0.0519 
D) 0.667 
E) none of the above

Question 6

If the solubility of sodium chloride is 36 grams per 100 grams of water,which of the following solutions would be considered unsaturated?

Accepted Answer

A) 5.8 moles of NaCl dissolved in 1 L of water 
B) 3.25 moles of NaCL dissolved in 500 ml of water 
C) 1.85 moles of NaCl dissolved in 300 ml of water 
D) none of the above 
A) 5.8 moles of NaCl dissolved in 1 L of water 
B) 3.25 moles of NaCL dissolved in 500 ml of water 
C) 1.85 moles of NaCl dissolved in 300 ml of water 
D) none of the above

Question 7

A semipermeable membrane allows only half the amount of a substance to pass through it.

Accepted Answer

A) True 
 B)False

Question 8

A 90.0 g sample of NaOH is dissolved in water and the solution is diluted to give a final volume of 3.00 liters.The molarity of the final solution is ________.

Accepted Answer

A) 0.500 M 
B) 0.750 M 
C) 1.00 M 
D) 2.25 M 
E) none of the above 
A) 0.500 M 
B) 0.750 M 
C) 1.00 M 
D) 2.25 M 
E) none of the above

Question 9

Colligative properties are independent of the amount of solute in solution.

Accepted Answer

A) True 
 B)False

Question 10

The solubility of solids in water:

Accepted Answer

A) is independent of pressure above solution. 
B) increases with increasing pressure above solution. 
C) decreases with increasing pressure above solution. 
D) Solids are not soluble in water. 
E) none of the above 
A) is independent of pressure above solution. 
B) increases with increasing pressure above solution. 
C) decreases with increasing pressure above solution. 
D) Solids are not soluble in water. 
E) none of the above

Question 11

Solution A has a concentration of 0.10 M sugar and Solution B has a concentration of 0.20 M sugar.If the two solutions are separated by a semipermeable membrane,which of the following occurs during osmosis?

Accepted Answer

A) Solvent molecules move from B into A. 
B) Sugar molecules move from B into A. 
C) The molarity of A increases. 
D) The molarity of B increases. 
E) none of the above 
A) Solvent molecules move from B into A. 
B) Sugar molecules move from B into A. 
C) The molarity of A increases. 
D) The molarity of B increases. 
E) none of the above

Question 12

A supersaturated solution is unstable and crystallization usually occurs.

Accepted Answer

A) True 
 B)False

Question 13

How many grams of KCl are needed to make 50.0 mL of 2.45M KCl?

Accepted Answer

A) 9.13 
B) 1.52 
C) 91.3 
D) 0.123 
E) none of the above 
A) 9.13 
B) 1.52 
C) 91.3 
D) 0.123 
E) none of the above

Question 14

Oftentimes solubility of a compound limits the concentration of the solution that can be prepared.Use the solubility data given with each compound shown below to determine which compound would allow the preparation of a 10.0 Molar solution.

Accepted Answer

A) AgNO3 (solubility = 122 g/100 g H2O) 
B) KCl (solubility = 34.0 g/100 g H2O) 
C) NaNO3 (solubility = 89.0 g/100 g H2O) 
D) NH4Cl (solubility = 41.1 g/100 g H2O) 
E) none of the above 
A) AgNO3 (solubility = 122 g/100 g H2O) 
B) KCl (solubility = 34.0 g/100 g H2O) 
C) NaNO3 (solubility = 89.0 g/100 g H2O) 
D) NH4Cl (solubility = 41.1 g/100 g H2O) 
E) none of the above

Question 15

Which compound below forms an electrolyte solution when dissolved in water?

Accepted Answer

A) Cl2 
B) KOH 
C) CH3CH2OH 
D) C12H22O11 (sucrose) 
E) none of the above 
A) Cl2 
B) KOH 
C) CH3CH2OH 
D) C12H22O11 (sucrose) 
E) none of the above

Question 16

If you put a living cell into seawater containing a higher concentration of sodium chloride,the cell loses water through osmosis.

Accepted Answer

A) True 
 B)False

Question 17

What is the molarity of a solution prepared by dissolving 54.3 g of Ca(NNO3)2 into 355 mL of water?

Accepted Answer

A) 0.331 M 
B) 0.932 M 
C) 0.117 M 
D) 1.99 M 
E) none of the above 
A) 0.331 M 
B) 0.932 M 
C) 0.117 M 
D) 1.99 M 
E) none of the above

Question 18

You need to prepare 2.00 L of 0.100 M Na2CO3 solution.The best procedure is to weigh out:

Accepted Answer

A) 10.6 g Na2CO3 and add 2.00 L of water to it. 
B) 21.2 g Na2CO3 and add 2.00 L of water to it. 
C) 10.6 g Na2CO3 and add water until the final solution has a volume of 2.00 L. 
D) 21.2 g Na2CO3 and add water until the final solution has a volume of 2.00 L. 
A) 10.6 g Na2CO3 and add 2.00 L of water to it. 
B) 21.2 g Na2CO3 and add 2.00 L of water to it. 
C) 10.6 g Na2CO3 and add water until the final solution has a volume of 2.00 L. 
D) 21.2 g Na2CO3 and add water until the final solution has a volume of 2.00 L.

Question 19

We dissolve 2.45 g of sugar in 200.0 g water.What is the mass percent of sugar in the solution?

Accepted Answer

A) 1.21% 
B) 1.23% 
C) 2.42% 
D) 123% 
E) none of the above 
A) 1.21% 
B) 1.23% 
C) 2.42% 
D) 123% 
E) none of the above

Question 20

Suppose a vodka martini contains 30% alcohol with the remaining portion of the drink composed of water.What is the solute in this type of martini?

Accepted Answer

A) water 
B) alcohol 
C) ice 
D) olive 
E) none of the above 
A) water 
B) alcohol 
C) ice 
D) olive 
E) none of the above

How many grams of a 23.4% by mass NaF solution is needed if you want to have 1.33 moles of NaF?

Osmotic pressure is:

What is the molarity of a solution prepared by dissolving 10.7 grams NaI in 0.250L ?

In order for a solute to dissolve in solution:

What is the concentration of sodium chloride in the final solution if of BaC completely reacts and the total volume of the reaction is , given the reaction:

If the solubility of sodium chloride is 36 grams per 100 grams of water,which of the following solutions would be considered unsaturated?

A semipermeable membrane allows only half the amount of a substance to pass through it.

A 90.0 g sample of NaOH is dissolved in water and the solution is diluted to give a final volume of 3.00 liters.The molarity of the final solution is ________.

Colligative properties are independent of the amount of solute in solution.

The solubility of solids in water:

Solution A has a concentration of 0.10 M sugar and Solution B has a concentration of 0.20 M sugar.If the two solutions are separated by a semipermeable membrane,which of the following occurs during osmosis?

A supersaturated solution is unstable and crystallization usually occurs.

How many grams of KCl are needed to make 50.0 mL of 2.45M KCl?

Oftentimes solubility of a compound limits the concentration of the solution that can be prepared.Use the solubility data given with each compound shown below to determine which compound would allow the preparation of a 10.0 Molar solution.

Which compound below forms an electrolyte solution when dissolved in water?

If you put a living cell into seawater containing a higher concentration of sodium chloride,the cell loses water through osmosis.

What is the molarity of a solution prepared by dissolving 54.3 g of Ca(NNO₃)₂ into 355 mL of water?

You need to prepare 2.00 L of 0.100 M Na₂CO₃ solution.The best procedure is to weigh out:

We dissolve 2.45 g of sugar in 200.0 g water.What is the mass percent of sugar in the solution?

Suppose a vodka martini contains 30% alcohol with the remaining portion of the drink composed of water.What is the solute in this type of martini?

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Exam 13: Solutions

How many grams of a 23.4% by mass NaF solution is needed if you want to have 1.33 moles of NaF?

Osmotic pressure is:

What is the molarity of a solution prepared by dissolving 10.7 grams NaI in 0.250L ?

In order for a solute to dissolve in solution:

What is the concentration of sodium chloride in the final solution if of BaC completely reacts and the total volume of the reaction is , given the reaction:

If the solubility of sodium chloride is 36 grams per 100 grams of water,which of the following solutions would be considered unsaturated?

A semipermeable membrane allows only half the amount of a substance to pass through it.

A 90.0 g sample of NaOH is dissolved in water and the solution is diluted to give a final volume of 3.00 liters.The molarity of the final solution is ________.

Colligative properties are independent of the amount of solute in solution.

The solubility of solids in water:

Solution A has a concentration of 0.10 M sugar and Solution B has a concentration of 0.20 M sugar.If the two solutions are separated by a semipermeable membrane,which of the following occurs during osmosis?

A supersaturated solution is unstable and crystallization usually occurs.

How many grams of KCl are needed to make 50.0 mL of 2.45M KCl?

Oftentimes solubility of a compound limits the concentration of the solution that can be prepared.Use the solubility data given with each compound shown below to determine which compound would allow the preparation of a 10.0 Molar solution.

Which compound below forms an electrolyte solution when dissolved in water?

If you put a living cell into seawater containing a higher concentration of sodium chloride,the cell loses water through osmosis.

What is the molarity of a solution prepared by dissolving 54.3 g of Ca(NNO3)2 into 355 mL of water?

You need to prepare 2.00 L of 0.100 M Na2CO3 solution.The best procedure is to weigh out:

We dissolve 2.45 g of sugar in 200.0 g water.What is the mass percent of sugar in the solution?

Suppose a vodka martini contains 30% alcohol with the remaining portion of the drink composed of water.What is the solute in this type of martini?

The Chemical World

Measurement and Problem Solving

Matter and Energy

Atoms and Elements

Molecules and Compounds

Chemical Composition

Chemical Reactions

Quantities in Chemical Reactions

Electrons in Atoms and the Periodic Table

Chemical Bonding

Gases

Liquids, solids, and Intermolecular Forces

Acids and Bases

Chemical Equilibrium

Oxidation and Reduction

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

What is the molarity of a solution prepared by dissolving 54.3 g of Ca(NNO₃)₂ into 355 mL of water?

You need to prepare 2.00 L of 0.100 M Na₂CO₃ solution.The best procedure is to weigh out: