Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

A-Level Chemistry > Haloalkanes > Flashcards

Haloalkanes Flashcards

You may prefer our related Brainscape-certified flashcards:
Periodic Table flashcards Chemistry 101 flashcards AP® Chemistry flashcards Organic Chemistry 101 flashcards
1
Q

What is the ozone layer?

A

A high concentration of ozone molecules in a layer of the stratosphere about 15-30km above the Earth’s surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the chemical formula for ozone?

A

O3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What does ozone absorb?

A

UV radiation for the sun

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What does CFCs stand for?

A

Chlorofluorocarbons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are CFCs?

A

A class of organic compounds that contain chlorine and fluorine atoms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What were CFCs used for?

A

Refrigerators
Aerosols
Fire-safety equipment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the example of CFCs?

A

Dichloro-difluoro-methane

1,1,1-trichloro-2,2,2-trifluoro-ethane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the properties of CFCs?

A

Inert

Non-toxic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What does it mean if they are inert?

A

They are stable so won’t react with other substances

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What does being stable allow CFCs to do?

A

Allows them to exist in the atmosphere long enough to reach stratosphere

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What does the UV radiation do?

A

Break the C-Cl covalent bond to form free radicals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are the stages for CFC zone depletion?

A

Initiation: CF2Cl2 —-> CF2Cl + .Cl
Propagation 1: .Cl + O3 —-> .ClO + O
Propagation 2: .ClO + O —-> .Cl +O2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the overall equation for ozone depletion?

A

O3 + .O —-> 2O2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What does hydrolysis of a haloalkane involve?

A

Haloalkane + hydroxide —-> Alcohol + halogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the process of hydrolysis of haloalkane called?

A

Nucelophillic substitution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the factors that effect rate of hydrolysis for haloalkanes?

A

Shielding
nuclear charge
Atomic radius

17
Q

What happens hydrolysis rate of reaction down the group for haloalkanes?

A

It increases

18
Q

Why does the hydrolysis rate for haloalkanes increase down the group?

A

Because the C-I is the weakest bond since it the biggest atomic radius so it has the most shielding so it has the weakest nuclear attraction

19
Q

What is the test for the rate of reaction for haloalkanes?

A

Add ethanol ans silver nitrate to the haloalkane

Time how long the precipitate takes to form

20
Q

What is the ionic equation for the test for rate of reaction of haloalkanes?

A

Ag+ (aq) + Cl- (aq) —-> AgCl(s)

A-Level Chemistry (26 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions