Question 1

Define Tyndall effect.

Accepted Answer

The Tyndall effect i...

Question 2

Identify the compound whose solubility decreases with increasing temperature. 2(SO4) 3 B)  K2Cr2O7 C)  NaNO3 D)  KClO3 E)  CaCl2" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

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

Question 3

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

Question 4

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

Question 5

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

Question 6

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

Question 7

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

Question 8

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

Question 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?

Accepted Answer

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

Question 10

Give the major force between acetone and chloroform.

Accepted Answer

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

Question 11

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

Question 12

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

Question 13

Identify the classification of milk.

Accepted Answer

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

Question 14

Give the major force in NaCl solution.

Accepted Answer

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

Question 15

Give the preparation of rock candy.

Accepted Answer

A saturated solution of sugar is prepare...

Question 16

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.

Question 17

Identify the compound whose solubility is least affected by temperature.   B)  K2Cr2O7 C)  NaNO3 D)  Pb(NO3) 3 E)  NaCl" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

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

Question 18

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

Question 19

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

Question 20

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.

Exam 13: Solutions

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

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Dissolving of a salt can be defined as

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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.

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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.

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

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Identify the compound whose solubility decreases with increasing temperature.

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

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Define Tyndall effect.

Correct AnswerverifiedThe Tyndall effect i...View AnswerShow Answer

Identify the classification of milk.

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

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

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Identify the compound whose solubility is least affected by temperature.

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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.

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Give the major force between acetone and chloroform.

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Give the major force in NaCl solution.

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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.

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In an ________ solution,red blood cells ________.

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Give the preparation of rock candy.

Correct AnswerverifiedA saturated solution of sugar is prepare...View AnswerShow Answer

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

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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.

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

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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.

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

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The Tyndall effect i...
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What molality of pentane is obtained by dissolving 15 g pentane,C₅H₁₂,in 245.0 g hexane,C₆H₁₄?

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In an solution,red blood cells .

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A saturated solution of sugar is prepare...
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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.

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