pre lab quiz 3

Question 1

which have a hydroxl functional grp (-OH)

Answer 1

alcohols

Question 2

alcohol has what kind of functional group

Answer 2

hydroxyl functional group (-OH)

Question 3

alcohols undergo what reactions

Answer 3

oxidation
substitution

Question 4

alcohols can be classified as

Answer 4

primary
secondary
tertiary

Question 5

alcohols is classified based on their

Answer 5

degree on the substitution around C that contains the OH functionality

Question 6

primary alcohols undergo…

Answer 6

dehydration
oxidation

Question 7

primary alcohols form what during dehydration reactions

Answer 7

alkenes

Question 8

primary alcohols uses what strong oxidizing agents
and forms what

Answer 8

potassium dichromate
aldehyde

Question 9

what is the potassium dichromate used when oxidizing primary alcohols

Answer 9

strong oxidizing agent

Question 10

when primary alcohols undergo further reaction after forming aldehydes, what do they form

Answer 10

carboxylic acid

Question 11

why do primary alcohols cant react further form carboxylic acid

Answer 11

as it uses mild oxidation

Question 12

secondary alcohols produce…

Answer 12

ketone

Question 13

secondary alcohols are treated with…

Answer 13

oxidizing agents

Question 14

what kind of alcohols can undergo oxidation

Answer 14

primary
secondary

Question 15

what kind of alcohols are resistant to oxidation

Answer 15

tertiary

Question 16

which alcohol undergo substitution reaction

Answer 16

tertiary

Question 17

what alcohol has the -OH as their leaving group

Answer 17

tertiary

Question 18

what type of alcohols are aromatic compounds

Answer 18

phenols/ phenolics

Question 19

why are phenols or phenolic an aromatic compound

Answer 19

as they have benzene ring

Question 20

phenols has a benzene ring that…

Answer 20

has an -OH group directly attached to it

Question 21

how to confirm phenols or phenolic presence

Answer 21

by using ferric chloride (10drops)

Question 22

what is the positive result of the phenols or phenolic

Answer 22

visible colored-complex

Question 23

what is the title of this reaction

Answer 23

Reactions of Alcohols and Phenols

Question 24

the objectives of this experiment is to:

Answer 24

classify alcohols as primary, secondary and tertiary
understand the chemical reactions that alcohol undergoes

Question 25

name some of the reagents

Answer 25

ethanol benzyl alcohol jones reagent lucas reagent phenol isopropanol tert-butyl baeyer's reagent 1% FeCl3

Question 26

name the instruments used

Answer 26

electric stove or electric water bath

Question 27

glassware and apparatus

Answer 27

10 test tube 2 test tube holder 1 wash bottle 1 stainless water bath

Question 28

label how many test tubes by using codes for every sample

Answer 28

6

Question 29

how do you label 6 test tubes at the preliminary preparations

Answer 29

using codes for every sample

Question 30

place how many drops of each sample at the preliminary preparations

Answer 30

10 drops

Question 31

what do we use for blank sample

Answer 31

distilled water

Question 32

after each chemical reactions, make sure to...

Answer 32

wash all text tubes with liquid soap and water before proceeding

Question 33

how many drops do we put for baeyer's test

Answer 33

10 drops of baeyer's test

Question 34

how many drops do we put for jones oxidation test

Answer 34

6 drops of jones reagent

Question 35

how many drops do we put for lucas test

Answer 35

20 drops of lucas reagent

Question 36

how many drops do we put for ferric chloride test

Answer 36

10 drops

Question 37

what do we note in lucas reaction

Answer 37

the time required for the formation of second layer or emulsion of alcohols

Question 38

if there are no observable changes after 5 min in lucas test

Answer 38

heat the sample gently in boiling water bath for 2 min

Question 39

in lucas test how long do u heat the sample in the boiling water

Answer 39

for 2 min

Question 40

what should be placed under the fume hood

Answer 40

highly volatile solvent

Question 41

highly volatile solvent should be placed...

Answer 41

under the fume hood

Question 42

make sure what will not be left in beakers and droppers

Answer 42

excess amount of solvents

Question 43

how to avoid contamination

Answer 43

by using the correct droppers to avoid contamination

Question 44

have what in your pocket and for what

Answer 44

tissue paper for spills

Question 45

what not to add in water

Answer 45

acid

Question 46

use what to minimize trips going to the waste disposal area

Answer 46

extra beaker

Question 47

dispose all organic waste in

Answer 47

non-halogenated waste

Question 48

all organic waste with halogens should be disposed in

Answer 48

halogenated waste disposable

Question 49

`anything with heavy metals should be disposed in

Answer 49

heavy metals waste bottle

Question 50

why do tertiary may undergo substitution reaction

Answer 50

as -OH of a tertiary alcohol is a good leaving group

Question 51

what are the samples used

Answer 51

ethanol isopropanol tert-butanol benzyl alcohol phenol blank (distilled water)