Quiz 18

Question 1

1. The functional groups for organic acids is the

hydroxyl group

amine group

carbonyl group

carboxyl group

Answer 1

carboxyl group

Question 2

2. The general formula for an ester is

ROR’

RCOOH

RCOR’

RCOOR’

Answer 2

RCOOR’

Question 3

3. Hydrogenation of an alkene yields

alkane

alkyne

alcohol

aldehyde

Answer 3

alkane

Question 4

4. Which of the following contains a tertiary carbon?

2,2-dimethylpropane

3-methylheptane

2-pentene

all of the above

Answer 4

3-methylheptane

Question 5

5. Alkanes react primarily by

free radical substitution

electrophilic substitution

electrophilic addition

nucleophilic addition

Answer 5

free radical substitution

Question 6

6. The carbonyl group of aldehydes and ketones is very reactive because

the -C=O bond is electron rich

the oxygen has two nonbonding pairs

the -C=O bond is polar

all of the above

Answer 6

all of the above

Question 7

7. Aldehydes and ketones generally react by

nucleophilic addition

nucleophilic substitution

electrophilic addition

electrophilic substitution

Answer 7

nucleophilic addition

Question 8

8. What is formed when an alcohol reacts with a carboxylic acid?

ester

anhydride

acid chloride

thioester

Answer 8

ester

Question 9

9. Carboxylic acids are more acidic than alcohols because

of the increased polarity of the O-H bond due to the carbonyl group

of the stability of the carboxylate anion formed upon ionization

of the greater value of Ka

all of the above

Answer 9

all of the above

Question 10

10. A compound having the permanent dipole moment is _____.

CO2

H2

CH4

CO

Answer 10

CO

Question 11

11. Pentane and isopentane are what type of isomers?

aldehydes

chiral

structural

enantiomers

Answer 11

structural

Question 12

12. An alkyne contains at least one of which of the following carbon-carbon bonds?

double

quadruple

triple

single

Answer 12

triple

Question 13

13. How many carbon atoms does butane contain?

1

2

4

5

Answer 13

4

Question 14

14. What is the hybridization of the oxygen atom in an aldehyde?

sp

sp³

d²sp³

sp²

Answer 14

sp²

Question 15

15. CH3CH2C(O)NH2 is called a(n)

ketone

ester

aldehyde

amide

Answer 15

amide

Question 16

16. What is the general formula for an aldehyde?

R-CO-OH

R-CO-H

R-O-R

R-OH

Answer 16

R-CO-H

Question 17

17. What is the general formula for an alcohol?

R-CO-OH

R-CO-H

R-O-R

R-OH

Answer 17

R-OH

Question 18

18. Of the following, which are the most reactive?

alkanes

alkenes

cycloalkanes

alkynes

Answer 18

alkynes

Question 19

19. Which of the following is not an alkane?

C3H8

C7H16

C5H12

C9H18

Answer 19

C9H18

Question 20

20. What is the IUPAC name for the following compound? H3C– CH(CH3) – CH2 – CCH3=CH2

2,5-dimethylpentane

2,4-methylbutene

2,4-dimethyl-1-pentene

2,4-ethylbutene

Answer 20

2,4-dimethyl-1-pentene

Question 21

21. What is the general formula for alkanes?

CnH2n

CnH2n-2

C2nH2n+2

CnH2n+2

Answer 21

CnH2n+2

Question 22

22. If each of the following is an alkane, which one must be cyclic?

C7H14

C22H46

C3H8

C12H26

Answer 22

C7H14

Question 23

23. Which one of the following is a saturated hydrocarbon?

alkane

alkene

aromatic hydrocarbon

alkyne

Answer 23

alkane

Question 24

24. What is the distinguishing characteristic of a carbohydrate?

carbonyl group

two-C-OH groups

Cx(H2O)y formula

six carbon atoms

Answer 24

Cx(H2O)y formula

Question 25

25. If we add Cl2 to 1-butene, what is the product?

CH3CH2CCl2CH3

CH3CH2CCl2CHCl2

CH3CH2CH2CHCl2

CH3CH2CHClCH2Cl

Answer 25

CH3CH2CHClCH2Cl