Question 1

What is the molarity of a solution prepared by dissolving 0.750 mol CaCl2 in enough water to make 0.500 L of solution?

Accepted Answer

A) 0.375 M 
B) 0.667 M 
C) 1.50 M 
D) 83.2 M 
E) 166.5 M 
A) 0.375 M 
B) 0.667 M 
C) 1.50 M 
D) 83.2 M 
E) 166.5 M

Question 2

Which list includes all the pieces of lab equipment needed to prepare 0.100 M H3PO4 from a 5.00 M solution of H3PO4?

Accepted Answer

A) buret;volumetric flask 
B) buret;electronic balance 
C) electronic balance;volumetric flask 
D) electronic balance;graduated cylinder 
E) volumetric pipet and bulb;volumetric flask 
A) buret;volumetric flask 
B) buret;electronic balance 
C) electronic balance;volumetric flask 
D) electronic balance;graduated cylinder 
E) volumetric pipet and bulb;volumetric flask

Question 3

Which solution will have the highest boiling point?

Accepted Answer

A) 0.050 M KNO3 
B) 0.075 M CaCl2 
C) 0.025 M NH4NO3 
D) 0.020 M Na3PO4 
E) 0.10 M C6H12O6 
A) 0.050 M KNO3 
B) 0.075 M CaCl2 
C) 0.025 M NH4NO3 
D) 0.020 M Na3PO4 
E) 0.10 M C6H12O6

Question 4

The dissolving process is exothermic when the energy

Accepted Answer

A) released in solvation exceeds the energy used in breaking up solute-solute and solvent-solvent interactions. 
B) used in solvation exceeds the energy released in breaking up solute-solute and solvent-solvent interactions. 
C) released in solvation is about the same as the energy used in breaking up solute-solute and solvent-solvent interactions. 
D) used in solvation is less than the energy released in breaking up solute-solute and solvent-solvent interactions. 
E) used in solvation is about the same as the energy released in breaking up solute-solute and solvent-solvent interactions. 
A) released in solvation exceeds the energy used in breaking up solute-solute and solvent-solvent interactions. 
B) used in solvation exceeds the energy released in breaking up solute-solute and solvent-solvent interactions. 
C) released in solvation is about the same as the energy used in breaking up solute-solute and solvent-solvent interactions. 
D) used in solvation is less than the energy released in breaking up solute-solute and solvent-solvent interactions. 
E) used in solvation is about the same as the energy released in breaking up solute-solute and solvent-solvent interactions.

Question 5

Which information is necessary to determine the molarity of a solution if the chemical formula of the solute is known?

Accepted Answer

A) only the mass of solute dissolved 
B) only the volume of solvent used 
C) the molar mass of both the solute and the solvent used 
D) the mass of solute dissolved and the volume of solvent added 
E) the mass of solute dissolved and the final volume of the solution 
A) only the mass of solute dissolved 
B) only the volume of solvent used 
C) the molar mass of both the solute and the solvent used 
D) the mass of solute dissolved and the volume of solvent added 
E) the mass of solute dissolved and the final volume of the solution

Question 6

In general,the solubility of ________ in water decreases as temperature increases.

Accepted Answer

A) gases 
B) solids 
C) liquids 
D) none of these 
E) all of these 
A) gases 
B) solids 
C) liquids 
D) none of these 
E) all of these

Question 7

Which homogeneous mixture is opaque and has particles large enough to be filtered?

Accepted Answer

A) colloid 
B) solution 
C) suspension 
D) both colloids and suspensions 
E) none of the above 
A) colloid 
B) solution 
C) suspension 
D) both colloids and suspensions 
E) none of the above

Question 8

What is the molarity of a solution prepared by dissolving 1.25 mol of AgNO3 in enough water to make 625 mL of solution?

Accepted Answer

A) 2.00 M 
B) 0.00200 M 
C) 0.500 M 
D) 0.0118 M 
E) 0.340 M 
A) 2.00 M 
B) 0.00200 M 
C) 0.500 M 
D) 0.0118 M 
E) 0.340 M

Question 9

How much NaCl is needed to make 50.0 mL of a 16% (w/v)solution?

Accepted Answer

A) 2.0 g 
B) 4.0 g 
C) 8.0 g 
D) 12 g 
E) 16 g 
A) 2.0 g 
B) 4.0 g 
C) 8.0 g 
D) 12 g 
E) 16 g

Question 10

What is the final concentration of a solution prepared by adding water to 50.0 mL of 1.5 M NaOH to make 1.00 L of solution?

Accepted Answer

A) 0.075 M 
B) 0.030 M 
C) 1.5 M 
D) 7.5 M 
E) 30 M 
A) 0.075 M 
B) 0.030 M 
C) 1.5 M 
D) 7.5 M 
E) 30 M

Question 11

What is the molarity of a solution prepared by dissolving 48.0 g of NaOH in enough water to make 1.50 L of solution?

Accepted Answer

A) 0.0313 M 
B) 0.556 M 
C) 0.800 M 
D) 1.28 M 
E) 32.0 M 
A) 0.0313 M 
B) 0.556 M 
C) 0.800 M 
D) 1.28 M 
E) 32.0 M

Question 12

If a normal blood sample contains 4.5 mEq/L of calcium ion,how many mg of calcium are contained in a  
Blood sample?

Accepted Answer

A) 9.0 mg 
B) 5.6 mg 
C) 2.8 mg 
D) 2.3 mg 
E) 1.4 mg 
A) 9.0 mg 
B) 5.6 mg 
C) 2.8 mg 
D) 2.3 mg 
E) 1.4 mg

Question 13

Calculate the concentration in ppm of a pollutant that has been measured at 450 mg per 150 kg of sample.

Accepted Answer

A) 3.0 ppm 
B) 6.0 ppm 
C) 3000 ppm 
D) 330 ppm 
E) none of the above 
A) 3.0 ppm 
B) 6.0 ppm 
C) 3000 ppm 
D) 330 ppm 
E) none of the above

Question 14

Which list includes all the pieces of lab equipment needed to prepare a 0.500 M solution of NaCl from the pure salt and water?

Accepted Answer

A) buret;volumetric flask 
B) buret;electronic balance 
C) electronic balance;volumetric flask 
D) electronic balance;graduated cylinder 
E) volumetric pipet and bulb;volumetric flask 
A) buret;volumetric flask 
B) buret;electronic balance 
C) electronic balance;volumetric flask 
D) electronic balance;graduated cylinder 
E) volumetric pipet and bulb;volumetric flask

Question 15

Calculate the concentration of nitrogen gas in water with a nitrogen gas at a partial pressure of 0.826 atm above it.Henry's law constant for nitrogen in water is 6.8 × 10-4 mol/L-atm.

Accepted Answer

A) 5.6 × 10-4 M 
B) 8.2 × 10-3 M 
C) 1.2 × 103 M 
D) 0.43 M 
A) 5.6 × 10-4 M 
B) 8.2 × 10-3 M 
C) 1.2 × 103 M 
D) 0.43 M

Question 16

Which substance is not an electrolyte?

Accepted Answer

A) NaCl 
B) HCl 
C) NH4NO3 
D) KOH 
E) CH4 
A) NaCl 
B) HCl 
C) NH4NO3 
D) KOH 
E) CH4

Question 17

Which of the following is miscible with CHS1U1B13S1U1B0CHS1U1B12S1U1B0OH?

Accepted Answer

A) CHS1U1B13S1U1B0CHS1U1B12S1U1B0CHS1U1B13S1U1B0 
B) CHS1U1B13S1U1B0OH 
C) CClS1U1B14S1U1B0 
D) CHS1U1B13S1U1B0CHS1U1B13S1U1B0 
E) CBrS1U1B14S1U1B0 
A) CHS1U1B13S1U1B0CHS1U1B12S1U1B0CHS1U1B13S1U1B0 
B) CHS1U1B13S1U1B0OH 
C) CClS1U1B14S1U1B0 
D) CHS1U1B13S1U1B0CHS1U1B13S1U1B0 
E) CBrS1U1B14S1U1B0

Question 18

Match the following.
-hypertonic

Accepted Answer

A) an ionic compound which attracts water molecules from the atmosphere 
B) a solution in which no more solute will dissolve and in which excess solute is visible in the container 
C) a substance which dissociates completely in solution,providing a relatively large number of ions to conduct electricity 
D) refers to a solution having a lower osmolarity than 0.30 Osmol 
E) an ionic compound which holds water molecules within its crystalline structure
F)refers to two solutions having the same osmolarity
G)a substance which does not dissociate in solution and therefore does not conduct electricity
H)a solution in which more solute is dissolved than predicted for that particular temperature
I)refers to a solution having a greater osmolarity than 0.30 Osmol
J)the swelling and bursting of a red blood cell when placed in a solution of lower osmolarity than the cell itself
K)the shrinking of a red blood cell when placed in a solution of greater osmolarity than the cell itself
L)a solution in which more solute can be dissolved
M)a substance which partially dissociates in solution,providing a relatively small number of ions to conduct electricity 
A) an ionic compound which attracts water molecules from the atmosphere 
B) a solution in which no more solute will dissolve and in which excess solute is visible in the container 
C) a substance which dissociates completely in solution,providing a relatively large number of ions to conduct electricity 
D) refers to a solution having a lower osmolarity than 0.30 Osmol 
E) an ionic compound which holds water molecules within its crystalline structure
F)refers to two solutions having the same osmolarity
G)a substance which does not dissociate in solution and therefore does not conduct electricity
H)a solution in which more solute is dissolved than predicted for that particular temperature
I)refers to a solution having a greater osmolarity than 0.30 Osmol
J)the swelling and bursting of a red blood cell when placed in a solution of lower osmolarity than the cell itself
K)the shrinking of a red blood cell when placed in a solution of greater osmolarity than the cell itself
L)a solution in which more solute can be dissolved
M)a substance which partially dissociates in solution,providing a relatively small number of ions to conduct electricity

Question 19

Which statement best explains the meaning of the phrase "like dissolves like"?

Accepted Answer

A) A solvent will easily dissolve a solute of similar mass. 
B) A solvent and solute with similar intermolecular forces will readily form a solution. 
C) The only true solutions are formed when water dissolves a non-polar solute. 
D) The only true solutions are formed when water dissolves a polar solute. 
E) None of these statements is correct. 
A) A solvent will easily dissolve a solute of similar mass. 
B) A solvent and solute with similar intermolecular forces will readily form a solution. 
C) The only true solutions are formed when water dissolves a non-polar solute. 
D) The only true solutions are formed when water dissolves a polar solute. 
E) None of these statements is correct.

Question 20

Which of the following can serve as the solvent in a solution?

Accepted Answer

A) a gas 
B) a liquid 
C) a solid 
D) a mixture of commingled liquids 
E) all of the above 
A) a gas 
B) a liquid 
C) a solid 
D) a mixture of commingled liquids 
E) all of the above

Exam 9: Solutions

What is the molarity of a solution prepared by dissolving 0.750 mol CaCl2 in enough water to make 0.500 L of solution?

Which list includes all the pieces of lab equipment needed to prepare 0.100 M H3PO4 from a 5.00 M solution of H3PO4?

Which solution will have the highest boiling point?

The dissolving process is exothermic when the energy

Which information is necessary to determine the molarity of a solution if the chemical formula of the solute is known?

In general,the solubility of ________ in water decreases as temperature increases.

Which homogeneous mixture is opaque and has particles large enough to be filtered?

What is the molarity of a solution prepared by dissolving 1.25 mol of AgNO3 in enough water to make 625 mL of solution?

How much NaCl is needed to make 50.0 mL of a 16% (w/v)solution?

What is the final concentration of a solution prepared by adding water to 50.0 mL of 1.5 M NaOH to make 1.00 L of solution?

What is the molarity of a solution prepared by dissolving 48.0 g of NaOH in enough water to make 1.50 L of solution?

If a normal blood sample contains 4.5 mEq/L of calcium ion,how many mg of calcium are contained in a Blood sample?

Calculate the concentration in ppm of a pollutant that has been measured at 450 mg per 150 kg of sample.

Which list includes all the pieces of lab equipment needed to prepare a 0.500 M solution of NaCl from the pure salt and water?

Calculate the concentration of nitrogen gas in water with a nitrogen gas at a partial pressure of 0.826 atm above it.Henry's law constant for nitrogen in water is 6.8 × 10-4 mol/L-atm.

Which substance is not an electrolyte?

Which of the following is miscible with CH3CH2OH?

Match the following. -hypertonic

Which statement best explains the meaning of the phrase "like dissolves like"?

Which of the following can serve as the solvent in a solution?

Matter and Measurements

Atoms and the Periodic Table

Ionic Compounds

Molecular Compounds

Classification and Balancing of Chemical Reactions

Chemical Reactions: Mole and Mass Relationships

Chemical Reactions: Energy, rates, and Equilibrium

Gases, liquids, and Solids

Acids and Bases

Nuclear Chemistry

Introduction to Organic Chemistry: Alkanes

Alkenes, alkynes, and Aromatic Compounds

Some Compounds With Oxygen, sulfur, or a Halogen

Aldehydes and Ketones

Amines

Carboxylic Acids and Their Derivatives

Amino Acids and Proteins

Enzymes and Vitamins

Carbohydrates

The Generation of Biochemical Energy

Carbohydrate Metabolism

Lipids

Lipid Metabolism

Protein and Amino Acid Metabolism

Nucleic Acids and Protein Synthesis

Genomics

Chemical Messengers: Hormones, neurotransmitters, and Drugs

Body Fluids

Filters

What is the molarity of a solution prepared by dissolving 0.750 mol CaCl₂ in enough water to make 0.500 L of solution?

Which list includes all the pieces of lab equipment needed to prepare 0.100 M H₃PO₄ from a 5.00 M solution of H₃PO₄?

What is the molarity of a solution prepared by dissolving 1.25 mol of AgNO₃ in enough water to make 625 mL of solution?

Calculate the concentration of nitrogen gas in water with a nitrogen gas at a partial pressure of 0.826 atm above it.Henry's law constant for nitrogen in water is 6.8 × 10^-4 mol/L-atm.

Which of the following is miscible with CH₃CH₂OH?