Chapter 13 Solutions

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Chemistry

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University

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Luis Bello

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71 Slides • 29 Questions

Chapter 13 Solutions

Checking Comprehension

Multiple Choice

What is the phase change of a solid to a liquid?

freezing

melting

boiling

condensation

Multiple Choice

Which is the opposite of condensation?

runoff

evaporation

precipitation

transpiration

Multiple Choice

What is evaporization?

a gas becoming a liquid

a liquid becoming a solid

a gas becoming a solid

a liquid becoming a gas

Multiple Choice

Sublimation is

when solid turns into gas

when gas turns into plasma

when liquid turns into gas

when gas turns into solid

Multiple Choice

________________________ have the strongest intermolecular forces of attraction.

Dipole- Dipole

Dispersion

Hydrogen Bonds

Multiple Choice

Which substance would have the weakest intermolecular forces of attraction?

CH₄

NaCl

H₂O

MgF₂

Multiple Choice

Hydrogen bonding occurs when hydrogen is bonded to N, O, or F. Which of the following has hydrogen bonding?

CBr₄

NO₂

H₂S

NH₃

Multiple Choice

What explains the very high melting and boiling point of water

Strong dipole-dipole bonds between water molecules

Strong hydrogen bonds between water molecules

Dispersion forces which are present in all molecules

Asymmetrical shape of the polar bonds.

Multiple Choice

It is the property of solid to be drawn into thin wires.

Ductility

Malleability

Elasticity

Flexibility

Multiple Choice

It is the property of solid to be hammered into thin sheets.

Ductility

Flexibility

Malleability

Elasticity

Multiple Choice

Which properties do solids have?

definite shape and volume

no definite shape and a definite volume

no definite shape and no definite volume

Multiple Choice

In a liquid

Particles are spread apart, but still relatively close

Particles are very far apart and move past each other very quickly

Particles vibrate to and fro

Particles don't exist

Solutions

Multiple Choice

What does it mean to be "Soluble" ?

Capable of being a solid.

To have soul.

Capable of being dissolved.

To sink.

Multiple Choice

What is a "homogeneous mixture of two or more substances in a single phase"?

Solution

Solvent

Solute

Compound

Multiple Choice

Which of the following actions will NOT

increase the rate of dissolution

(dissolving)?

Stirring the solution

Decreasing the temperature

Increasing the surface area of the

solute

Increasing the temperature

Multiple Choice

Which solute is the most soluble at 10 ⁰C?

KClO₃

NH₄Cl

NH₃

Multiple Choice

To make a solute dissolve more quickly i n a solvent which would you do?

Put it in cold water and stir it

Put it in warm water and stir it

Multiple Choice

air is a

compound

element

heterogeneous mixture

solution

Multiple Choice

What is a solvent?

The substance that does the dissolving in a solution.

The substance that is being dissolved in a solution.

The mixing of different substances.

The process in which neutral molecules lose or gain electrons

Multiple Choice

How many moles of NaCl are present in a solution with a molarity of 8.59M and 125 mL of solution?

1.07 gram

62.7 mol

1.07 mol

62.7 grams

Multiple Choice

Which solution is more concentrated?

Solution 1:

500 mL of water

100 g of salt

Solution 2:

500 mL of water

90 g of salt

Solution 1

Solution 2

They have the same concentration

I have no idea

Multiple Choice

What is the molality of a solution in which 3.0 moles of NaCl is dissolved in 1.5 Kg of water?

2.0 m

0.22 m

135 m

Multiple Choice

What is the percent by mass of a sugar solution where 10 grams of sugar is added to 100 grams of water?

.10%

0.091%

9.1%

Multiple Choice

What is the percent by mass of a sugar solution where 10 grams of sugar is added to 100 grams of water?

.10%

0.091%

9.1%

Multiple Choice

Which sample, when dissolved in 1.0 liter of water, produces a solution with the lowest freezing point?

0.1 mol of C₂H₅OH

0.1 mol of LiBr

0.2 mol of C₆H₁₂O₆

0.2 mol of CaCl₂

Multiple Choice

Which of the following solutions will have the lowest freezing point?

1.0 mol/L sucrose (C₁₂H₂₂O₁₁)

1.0 mol/L lithium chloride (LiCl)

1.0 mol/L sodium phosphide (Na₃P)

1.0 mol/L magnesium fluoride (MgF₂)

Multiple Choice

Which one of the following diagrams has the lowest vapor pressure?

Multiple Choice

Adding a nonvolatile solute to a liquid will ___.

depress both the freezing point and the boiling point

elevate both the freezing point and the boiling point

depress the freezing point and elevate the boiling point

elevate the freezing point and depress the boiling point

Multiple Choice

Adding a nonvolatile solute to a liquid will ___.

depress both the freezing point and the boiling point

elevate both the freezing point and the boiling point

depress the freezing point and elevate the boiling point

elevate the freezing point and depress the boiling point

100

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