Halogen derivaties

Question 1

What is the general formula for haloalkanes?

Answer 1

C_nH_(2n+1)X, where X is a halogen (F, Cl, Br, I).

Question 2

True or False: The longest carbon chain in haloalkanes must include the halogen substituent.

Answer 2

True.

Question 3

Fill in the blank: Haloarenes are compounds that contain a halogen atom attached to a ________ ring.

Answer 3

benzene.

Question 4

What suffix is used for haloalkanes in IUPAC nomenclature?

Answer 4

There is no specific suffix; halogens are treated as substituents.

Question 5

Which halogen is indicated by the prefix ‘bromo’?

Answer 5

Bromine.

Question 6

What is the first step in naming haloalkanes?

Answer 6

Identify the longest continuous carbon chain.

Question 7

Multiple Choice: Which of the following is a correct name for a compound with a three-carbon chain and a chlorine on the second carbon? A) 1-chloropropane B) 2-chloropropane C) 3-chloropropane

Answer 7

B) 2-chloropropane.

Question 8

True or False: In haloalkanes, the halogen is given the lowest possible number when numbering the carbon chain.

Answer 8

True.

Question 9

What prefix is used for fluorine in IUPAC nomenclature?

Answer 9

Fluoro.

Question 10

Short Answer: How do you indicate multiple halogen substituents in a compound’s name?

Answer 10

Use prefixes like di-, tri-, tetra- before the halogen name.

Question 11

What is the IUPAC name for CH3CH2Cl?

Answer 11

Ethyl chloride.

Question 12

Multiple Choice: Which of the following is NOT a haloalkane? A) Chloroethane B) Iodoethane C) Ethanol

Answer 12

C) Ethanol.

Question 13

Fill in the blank: A haloalkane with four carbon atoms and two bromine atoms would be named ________.

Answer 13

1,2-dibromobutane.

Question 14

What is the priority order for naming substituents in haloalkanes?

Answer 14

Halogens are treated equally and are named alphabetically.

Question 15

True or False: The position of the halogen substituent is indicated by a number in the compound’s name.

Answer 15

True.

Question 16

What is the IUPAC name for a benzene ring with a chlorine substituent?

Answer 16

Chlorobenzene.

Question 17

Multiple Choice: What is the correct name for C6H5Cl? A) Benzyl chloride B) Chlorobenzene C) Phenyl chloride

Answer 17

B) Chlorobenzene.

Question 18

Fill in the blank: In haloarenes, the halogen is treated as a ________ substituent.

Answer 18

monovalent.

Question 19

What is the IUPAC name for a haloalkane with a five-carbon chain and a chlorine on the third carbon?

Answer 19

3-chloro-pentane.

Question 20

True or False: Haloalkanes can be classified as primary, secondary, or tertiary based on the carbon to which the halogen is attached.

Answer 20

True.

Question 21

What is the correct naming convention for a compound with two different halogens?

Answer 21

List the halogens in alphabetical order regardless of their position.

Question 22

Short Answer: How do you name a compound with both a bromo and a chloro substituent?

Answer 22

It is named as 1-bromo-2-chloropropane if it has a three-carbon chain.

Question 23

Multiple Choice: Which of the following is a characteristic of haloalkanes? A) They are polar B) They are non-polar C) They are acidic

Answer 23

A) They are polar.

Question 24

Fill in the blank: The presence of halogens in haloalkanes generally increases the ________ of the compound.

Answer 24

boiling point.

Question 25

What is the main difference between haloalkanes and haloarenes?

Answer 25

Haloalkanes contain aliphatic carbon chains, while haloarenes contain aromatic rings.

Question 26

True or False: Haloarenes are usually less reactive than haloalkanes.

Answer 26

True.