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1 When 2-methylpent-1-ene is reacted with HBr containing peroxide, what will be

ID: 882850 • Letter: 1

Question

1

When 2-methylpent-1-ene is reacted with HBr containing peroxide, what will be the name of the resulting compound?

a) 2-methylpentane

b) 1,2-dibromo-2-methylpentane

c) 1-bromo-2-methylpentane

d) 2-bromo-2-methylpentane

e) 4-bromo-2-methylpentane

f) none of the above

2

When you react 2-methylbutane with Br2 and uv light, the major product will be 1-bromo-2-methylbutane.

a) true

b) false

3

sp2 hybridized carbon atoms are associated with triple bonds.

a) true

b) false

4

How many H atoms are present in 3-methylcyclopentene?

a) 7

b) 8

c) 9

d) 10

e) 11

f) 12

5

A hydrocarbon with the formula C8H16 is unsaturated.

a) true

b) false

6

An sp3 hybridzed carbon atom has no non-hybridized atomic p orbitals remaining.

a) true

b) false

7

When 2-methylpent-1-ene is reacted with Cl2, how many Cl atoms will be added to the resulting product molecule?

a) 0

b) 1

c) 2

d) 3

e) 4

8

Which of the following compounds would result from a reaction between benzene and 2-chloropropane with AlCl3?

a)

b)

c)

d)

e)

f)

9

Which of the following will undergo an unsymmetrial addition reaction with but-1-ene ? (mark all correct responses)

Choose all that apply.

a) Br2 in CCl4

b) Cl2 in CCl4

c) H2 with Ni and Heat

d) dry HBr

e) H2SO4/H2O

10

How many different compounds are there that fit the description of a bromo-chlorobenzene?

a) 1

b) 2

c) 3

d) 4

e) 5

f) 6

11

When but-1-yne is reacted with an equivalent mole amount of HBr, the result is mainly 2-bromobutane.

a) true

b) false

12

When but-1-yne is reacted with an equivalent mole amount of HBr, the result is mainly 1-bromobutane.

a) true

b) false

13

A free radical substitution reaction of methylcyclohexane (see structure) with Br2 will result in the production of a single major monobrominated product. To which carbon will the bromine attach in the formation of this product? Note: carbons 2 and 3 are labeled twice because bromination at either carbon will give the same product, respectively?

a) 1

b) 2

c) 3

d) 4

e) 5

f) none of the above

14

Starting with 1 mole cyclohexylethyne (see structure for starting material), which of the following compounds would result from a reaction with 2 moles H2 containing a Pt catalyst?

a)

b)

c)

d)

e)

f)

15

Alkynes do not undergo halogenation reactions.

a) true

b) false

16

All aromatic ring structures are toxic to humans and other organisms.

a) true

b) false

17

1-methylbutane has three primary carbons and one secondary carbon.

a) true

b) false

18

Which of the following alkenes should be classified as being in the cis- configuration?

a)

b)

c)

d)

e)

f)

19

What is the geometric shape associated with each of the carbon atoms in C2H6?

a) tetrahedral

b) trigonol pyramidal (pyramid with three points)

c) trigonol planar (flat triangle)

d) linear

e) square planar (flat square)

f) square pyramidal (pyramid with four points)

20

How many moles of H2 are required to convert 1 mole of cyclopenta-1,3-diene into cyclopentane?

a) 1

b) 2

c) 3

d) 4

e) 5

f) no chemical reaction

21

When but-1-ene is reacted with HCl, the result is mainly 1-chlorobutane.

a) true

b) false

22

Which of the following would most likely be a liquid at room temperature?

a) propane

b) but-2-ene

c) propene

d) butane

e) 2-bromobutane

f) chloromethane

23

What is the accepted IUPAC name for the following hydrocarbon?

24

Which of the following statements concerning butane and 1-chlorobutane is/are true? (mark all correct responses)

Choose all that apply.

a) 1-chlorobutane is more polar than butane

b) butane has a higher boiling point

c) butane is definitely more dense than 1-chlorobutane

d) 1-chlorobutane molecules are more massive than butane molecules

e) 1-chlorobutane molecules have more carbon than butane molecules

f) all of the above are true statements

25

a) 0

b) 2

c) 3

d) 4

e) 5

f) 6

26

Starting with 2,3-dimethylpent-1-ene, which of the following compounds would result from a reaction with Br2 in a nonpolar solvent such as CCl4?

a)

b)

c)

d)

e)

f)

g)

27

Aromatic hydrocarbons undergo addition reactions similar to those of alkynes.

a) true

b) false

28

Which of the following is a structural (constitutional) isomer of cyclohexane?

a) 2-methylhexane

b) 2-methylhex-3-ene

c) 2,3-dimethylhexane

d) 3-methylheptane

e) 1-methylcyclohexene

f) 3-methylpent-2-ene

29

Which of the following is a structural (constitutional) isomer of 2-bromohexane?

a) 2-bromo-2-methylhexane

b) 2-bromohex-3-ene

c) 2,3-dibromohexane

d) 3-bromo-2-methylheptane

e) 3-bromo-2,2-dimethylbutane

f) 1-bromo-2-methylcyclohexane

30

If a carbon atom is sp2 hybridized, what is the maximum number of other atoms that may be attached to this C atom?

a) 1

b) 2

c) 3

d) 4

e) 5

f) 6

31

When 1 mole of pent-1-yne is reacted with 1 mol of Br2, what will be the name of the resulting compound?

a) pentane

b) 2,2-dibromopent-1-ene

c) 1,2-dibromopent-1-ene

d) 1,1-dibromopentane

e) 2-bromopent-1-ene

f) none of the above

32

When 1-methylcyclopent-1-ene is reacted with HBr containing peroxide, what will be the name of the resulting compound?

a) methylcyclopentane

b) 1,2-dibromo-1-methylcyclopentane

c) 1-bromo-1-methylcyclopentane

d) 1-bromo-2-methylcyclopentane

e) 1-bromo-4-methylcyclopentane

f) none of the above

33

When but-1-ene is reacted with HCl, the result is mainly 1-chlorobutene.

a) true

b) false

34

All hydrocarbons are flammable.

a) true

b) false

35

a) 1

b) 2

c) 3

d) 4

e) 5

f) 6

36

What is the accepted IUPAC name for the following hydrocarbon?

Place your answer in the box and use proper syntax for naming Ð commas between numbers and dashes between numbers and letters

37

What is the proper name for the following alkyl side group where the main carbon chain is denoted with a squiggly line?

a) methyl

b) ethyl

c) propyl

d) isopropyl

e) butyl

f) sec-butyl

g) tert-butyl

h) isobutyl

38

Aromatic hydrocarbons must be cyclic.

a) true

b) false

Explanation / Answer

1) C. 1-bromo-2-methylpentane

2) b) false

3) b) false

4) d) 10

5) a) true

6) a) true

7) c) 2

8) c, e