chapter 10 acohols and phenol

Question 1

solubility in H20 of butan-1-ol

Answer 1

+

Question 2

what is the color of the ferric chloride test of phenol

Answer 2

violet

Question 3

what is the color of ferric chloride test of butan-1-ol

Answer 3

yellow

Question 4

explain why many alcohols are soluble in water. What part of an alcohol limit its solubility in water and what part of alcohol make it soluble in water?

Answer 4

it is soluble in water due to their ability to form hydrogen bonds with water molecules.the hydrocarbon can limit its solubilty in water. shorter hydrocarbon chains tend to increase solubility while long chains decrease solubility.

Question 5

what do u predict that methanol, ethanol and propanol are soluble in water?

Answer 5

all are soluble in water since they can form hydrogen bonds with water molecules. This bonds enable the alcohols to mix and dissolve in water.

Question 6

what is the ferric chloride test of tert-butanol?

Answer 6

yellow

Question 7

what is the ferric chloride test of unknown 2?

Answer 7

yellow

Question 8

ph of phenol

Answer 8

6

Question 9

what is the structure of methanol

Answer 9

CH3-OH

Question 10

what is the structure of ethanol

Answer 10

CH3CH2-OH

Question 11

what is the structure of propanol

Answer 11

CH3CH(OH)CH3

Question 12

what do you call a benzene with OH

Answer 12

phenol

Question 13

alcohols are organic compounds that contains
____ group.

Answer 13

hydroxyl (OH)

Question 14

classifications of aliphatic alcohol

Answer 14

1- primary alcohol
2- secondary alcohol
3- tertiary alcohol

Question 15

OH group is attached to one carbon atom

Answer 15

primary

Question 16

alcohol attached to 2 carbon atoms

Answer 16

secondary alcohol

Question 17

alcohol that attached to 3 carbon atoms

Answer 17

tertiary

Question 18

what is tertiary alcohol?

Answer 18

it react immediately. the test tube will get hot and because the chloride is insoluble two layers may be apparent or a cloudy dispersion form.

Question 19

what does secondary alcohol reacts

Answer 19

it will become cloudy in 5-10 min. If cloudiness does not appear place the test tube in hot water bath.

Question 20

what does tertiary alcohol reacts

Answer 20

no reaction in a reasonable length of time.

Question 21

aldehyde and ketones containing 1 to 4 carbon atoms are ___________ in water

Answer 21

soluble in water

Question 22

aldehyde and ketones containing 5 or more carbon atoms are _______ in water.

Answer 22

insoluble

Question 23

what chemical test can you use to distinguish between pentan-2-one and pentan-3-one?

Answer 23

iodoform test will be and effective way since pentan-2-one will result to positive while pentan-3-one will result to negative.

Question 24

compound A forms red orange precipitate with benidict reagent but does not react with iodoform?

Answer 24

it is aldehyde

Question 25

compound b forms yellow solid in iodoform test but does not react with benedict reagent

Answer 25

it is acetone.

Question 26

does formaldehyde is soluble in water?

Answer 26

yes

Question 27

functionality of acetone ( ketone or aldehyde)

Answer 27

ketone

Question 28

Functionality of benzaldehyde (ketone or aldehyde)

Answer 28

aldehyde

Question 29

Functionality of butan-2-one (ketone or aldehyde)

Answer 29

ketone

Question 30

Functionality of formaldehyde (ketone or aldehyde)

Answer 30

aldehyde

Question 31

Functionality of vanillin (ketone or aldehyde)

Answer 31

aldehyde

Question 32

what sample is insoluble in water?

Answer 32

benzaldehyde

Question 33

what are the iodoform test presence of methyl ketone?

Answer 33

acetone and butan-2-one

Question 34

what are the iodoform test absence of methyl ketone?

Answer 34

benzaldehyde, formaldehyde, vanillin

Question 35

lewis structure of acetaldehyde

Question 36

lewis structure of acetone

Question 37

lewis structure of butan-2-one

Question 38

lewis structure of formaldehyde

Question 39

lewis structure propionaldehyde