Question 1

In an ________ solution,red blood cells ________.

Accepted Answer

A)  isomotic, have a normal shape 
B)  hyperosmotic, have a normal shape 
C)  hyposmatic, lose water and shrivel 
D)  isosmotic, lose water and shrivel 
E)  isosmotic, swell and may burst 
A)  isomotic, have a normal shape 
B)  hyperosmotic, have a normal shape 
C)  hyposmatic, lose water and shrivel 
D)  isosmotic, lose water and shrivel 
E)  isosmotic, swell and may burst

Question 2

The Henry's law constant for helium gas in water at 30°C is 3.70 × 10-4 M/atm.When the partial pressure of helium above a sample of water is 0.650 atm,the concentration of helium in the water is ________ M.

Accepted Answer

A)  5.69 × 10-4 
B)  1.76 × 103 
C)  1.30 
D)  2.41 × 10-4 
E)  3.70 × 10-4 
A)  5.69 × 10-4 
B)  1.76 × 103 
C)  1.30 
D)  2.41 × 10-4 
E)  3.70 × 10-4

Question 3

Identify the classification of milk.

Accepted Answer

A)  aerosol 
B)  solid aerosol 
C)  foam 
D)  emulsion 
E)  solid emulsion 
A)  aerosol 
B)  solid aerosol 
C)  foam 
D)  emulsion 
E)  solid emulsion

Question 4

Give the major force between acetone and chloroform.

Accepted Answer

A)  dipole-dipole 
B)  dispersion 
C)  hydrogen bonding 
D)  ion-ion 
E)  ion-dipole 
A)  dipole-dipole 
B)  dispersion 
C)  hydrogen bonding 
D)  ion-ion 
E)  ion-dipole

Question 5

Determine the vapor pressure of a solution at 55°C that contains 34.2 g NaCl in 375 mL of water.The vapor pressure of pure water at 55°C is 118.1 torr.The van't Hoff factor for NaCl is 1.9.

Accepted Answer

A)  115 torr 
B)  87.1 torr 
C)  108 torr 
D)  112 torr 
E)  92.8 torr 
A)  115 torr 
B)  87.1 torr 
C)  108 torr 
D)  112 torr 
E)  92.8 torr

Question 6

An aqueous solution is 0.467 M in HCl.What is the molality of the solution if the density is 1.23 g/mL?

Accepted Answer

A)  0.115 m 
B)  0.275 m 
C)  0.374 m 
D)  0.525 m 
E)  0.318 m 
A)  0.115 m 
B)  0.275 m 
C)  0.374 m 
D)  0.525 m 
E)  0.318 m

Question 7

Give the major force in NaCl solution.

Accepted Answer

A)  dipole-dipole 
B)  nonpolar forces 
C)  hydrogen bonding 
D)  ion-ion 
E)  ion-dipole 
A)  dipole-dipole 
B)  nonpolar forces 
C)  hydrogen bonding 
D)  ion-ion 
E)  ion-dipole

Question 8

A solution is prepared by adding 30.00 g of lactose (milk sugar)to 110.0 g of water at 55° The partial pressure of water above the solution is ________ torr.The vapor pressure of pure water at 55°C is 118.0 torr.The molar mass of lactose is 342.3 g/mol.

Accepted Answer

A)  1.670 
B)  94.1 
C)  169.4 
D)  116.3 
E)  92.7 
A)  1.670 
B)  94.1 
C)  169.4 
D)  116.3 
E)  92.7

Question 9

Calculate the molality of a solution formed by dissolving 34.8 g of LiI in 500.0 mL of water.

Accepted Answer

A)  0.254 m 
B)  0.130 m 
C)  0.696 m 
D)  0.260 m 
E)  0.520 m 
A)  0.254 m 
B)  0.130 m 
C)  0.696 m 
D)  0.260 m 
E)  0.520 m

Question 10

What molality of pentane is obtained by dissolving 15 g pentane,C5H12,in 245.0 g hexane,C6H14?

Accepted Answer

A)  0.058 m 
B)  0.068 m 
C)  0.85 m 
D)  61 m 
A)  0.058 m 
B)  0.068 m 
C)  0.85 m 
D)  61 m

Question 11

A 1.00 L sample of water contains 0.0048 g of SH ⁻ ions.Determine the concentration of SH ⁻ ions in ppm if the density of the solution is 1.00 g/mL.

Accepted Answer

A)  3.6 ppm 
B)  9.6 ppm 
C)  4.8 ppm 
D)  2.4 ppm 
E)  7.2 ppm 
A)  3.6 ppm 
B)  9.6 ppm 
C)  4.8 ppm 
D)  2.4 ppm 
E)  7.2 ppm

Question 12

Define Tyndall effect.

Accepted Answer

The Tyndall effect i

Question 13

Choose the aqueous solution below with the highest freezing point.These are all solutions of nonvolatile solutes and you should assume ideal van't Hoff factors where applicable.

Accepted Answer

A)  0.200 m Mg(ClO4)2 
B)  0.200 m Na3PO3 
C)  0.200 m HOCH2CH2OH 
D)  0.200 m Ba(NO3)2 
E)  These all have the same freezing point. 
A)  0.200 m Mg(ClO4)2 
B)  0.200 m Na3PO3 
C)  0.200 m HOCH2CH2OH 
D)  0.200 m Ba(NO3)2 
E)  These all have the same freezing point.

Question 14

Identify the compound whose solubility decreases with increasing temperature.

Accepted Answer

A)  Ce2(SO4)3 
B)  K2Cr2O7 
C)  NaNO3 
D)  KClO3 
E)  CaCl2 
A)  Ce2(SO4)3 
B)  K2Cr2O7 
C)  NaNO3 
D)  KClO3 
E)  CaCl2

Question 15

Dissolving of a salt can be defined as

Accepted Answer

A)  solvation of ions, with no change in the amount of solid. 
B)  solvation of ions, with increase in the amount of solid. 
C)  solvation of ions, with decrease in the amount of solid. 
D)  rate of bubbling > rate of dissolving. 
E)  rate of condensing > rate of bubbling. 
A)  solvation of ions, with no change in the amount of solid. 
B)  solvation of ions, with increase in the amount of solid. 
C)  solvation of ions, with decrease in the amount of solid. 
D)  rate of bubbling > rate of dissolving. 
E)  rate of condensing > rate of bubbling.

Question 16

Give the preparation of rock candy.

Accepted Answer

A saturated solution of sugar is prepare

Question 17

How much water must be added to 36.0 g of SrCl2 to produce a solution that is 35.0 wt% SrCl2?

Accepted Answer

A)  48.6 g 
B)  66.9 g 
C)  97.2 g 
D)  103 g 
A)  48.6 g 
B)  66.9 g 
C)  97.2 g 
D)  103 g

Question 18

Calculate the molarity of a solution that contains 0.300 moles of CsBr in 0.600 L of water.

Accepted Answer

A)  0.500 M 
B)  2.00 M 
C)  0.125 M 
D)  8.00 M 
E)  0.750 M 
A)  0.500 M 
B)  2.00 M 
C)  0.125 M 
D)  8.00 M 
E)  0.750 M

Question 19

Identify the compound whose solubility is least affected by temperature.

Accepted Answer

A)  KCl  
B)  K2Cr2O7 
C)  NaNO3 
D)  Pb(NO3)3 
E)  NaCl 
A)  KCl  
B)  K2Cr2O7 
C)  NaNO3 
D)  Pb(NO3)3 
E)  NaCl

Question 20

What mass of MgF2 is contained in 80.85 g of a 22.4% by mass solution of MgF2 in water?

Accepted Answer

A)  18.1 g 
B)  5.52 g 
C)  27.7 g 
D)  36.1 g 
E)  11.2 g 
A)  18.1 g 
B)  5.52 g 
C)  27.7 g 
D)  36.1 g 
E)  11.2 g

Exam 13: Solutions

In an ________ solution,red blood cells ________.

The Henry's law constant for helium gas in water at 30°C is 3.70 × 10-4 M/atm.When the partial pressure of helium above a sample of water is 0.650 atm,the concentration of helium in the water is ________ M.

Identify the classification of milk.

Give the major force between acetone and chloroform.

Determine the vapor pressure of a solution at 55°C that contains 34.2 g NaCl in 375 mL of water.The vapor pressure of pure water at 55°C is 118.1 torr.The van't Hoff factor for NaCl is 1.9.

An aqueous solution is 0.467 M in HCl.What is the molality of the solution if the density is 1.23 g/mL?

Give the major force in NaCl solution.

A solution is prepared by adding 30.00 g of lactose (milk sugar)to 110.0 g of water at 55° The partial pressure of water above the solution is ________ torr.The vapor pressure of pure water at 55°C is 118.0 torr.The molar mass of lactose is 342.3 g/mol.

Calculate the molality of a solution formed by dissolving 34.8 g of LiI in 500.0 mL of water.

What molality of pentane is obtained by dissolving 15 g pentane,C5H12,in 245.0 g hexane,C6H14?

A 1.00 L sample of water contains 0.0048 g of SH ⁻ ions.Determine the concentration of SH ⁻ ions in ppm if the density of the solution is 1.00 g/mL.

Define Tyndall effect.

Choose the aqueous solution below with the highest freezing point.These are all solutions of nonvolatile solutes and you should assume ideal van't Hoff factors where applicable.

Identify the compound whose solubility decreases with increasing temperature.

Dissolving of a salt can be defined as

Give the preparation of rock candy.

How much water must be added to 36.0 g of SrCl2 to produce a solution that is 35.0 wt% SrCl2?

Calculate the molarity of a solution that contains 0.300 moles of CsBr in 0.600 L of water.

Identify the compound whose solubility is least affected by temperature.

What mass of MgF2 is contained in 80.85 g of a 22.4% by mass solution of MgF2 in water?

Matter, measurement, and Problem Solving

Atoms and Elements

Molecules,compounds,and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes,valence Bond Theory,

Liquids,solids,and Intermolecular Forces

Solids and Modern Materials

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

In an solution,red blood cells .

The Henry's law constant for helium gas in water at 30°C is 3.70 × 10^-4 M/atm.When the partial pressure of helium above a sample of water is 0.650 atm,the concentration of helium in the water is ________ M.

What molality of pentane is obtained by dissolving 15 g pentane,C₅H₁₂,in 245.0 g hexane,C₆H₁₄?

A 1.00 L sample of water contains 0.0048 g of SH⁻ ions.Determine the concentration of SH⁻ ions in ppm if the density of the solution is 1.00 g/mL.

How much water must be added to 36.0 g of SrCl₂ to produce a solution that is 35.0 wt% SrCl₂?

What mass of MgF₂ is contained in 80.85 g of a 22.4% by mass solution of MgF₂ in water?