Orgo Lab 2 Final

Front 1

Separatory funnel

Back 1

Front 2

Buchner funnel

Back 2

Front 3

Filter flask

Back 3

Front 4

Clamp

Back 4

Front 5

Melting point tube

Back 5

Front 6

Vacuum filtration

Back 6

Front 7

Recrystallization steps

Back 7

-select a proper solvent

-heat the solvent to its boiling point

-dissolve the solid compound in the minimum amount of boiling solvent

-filter the hot mixture

-cool the mixture

-collect the crystals by suction filtration

Front 8

Extraction

Back 8

Front 9

Short path distillation

Back 9

Front 10

Condenser

Back 10

Front 11

Sodium fusion

Back 11

-add 1 sodium sphere in dry test tube

-heat until vapors rise about 1/3 way up. Will have red glow at the bottom of the tube.

-remove from flame. Add 10 mg of unknown solid or 2 drops of unknown liquid.

-heat again. Add 10 mg of unknown again. Heat for at least 3 minutes.

-while hot, plunge into a 50 ml beaker containing 15 ml of distilled water.

-heat the contents and gravity filter

Front 12

Neutralization equivalent

Back 12

Front 13

Percent yield

Back 13

Front 14

Percent recovery

Back 14

Front 15

2-4 dinitrophenylhydrazine test

Back 15

Presence of aldehydes & ketones

Positive= yellow/orange/red

Front 16

Iodoform test

Back 16

Presence of methyl ketones

Positive=yellow ppt

Front 17

Tollen's reagent

Back 17

Presence of aldehydes

positive= silver mirror or black ppt

Front 18

Chromic acid test

Back 18

Presence of aliphatic or aromatic aldehyde

Positive=green ppt

Aliphatic aldehyde= <30 seconds

Aromatic aldehyde= >30 seconds

Front 19

Schiff's reagent

Back 19

Presence of aldehydes

Positive=magenta

Front 20

Lucas test

Back 20

Distinguish 1/2/3 alcohol

1=NR

2=milky within 5 mins

3=white,cloudy immediately

Front 21

Jones oxidation

Back 21

Only 1 and 2 alcohols react

(orange --> green)

Front 22

Iodoform test

Back 22

Presence of 2 alcohol=yellow ppt

Front 23

Ceric ammonium nitrate

Back 23

1/2/3 alcohols=red

Phenols=green/brown ppt

Front 24

Hinsberg test

Back 24

Presence of 1/2 amines

1 amine= 1 layer

2 amine= 2 layers

3 amine= 2 layers--> turns into 1 layer after

Front 25

Solubility test for amines

Back 25

Soluble in HCl=amine

Insoluble in H2O=aromatic amine

Front 26

Silver nitrate

Back 26

Presence of carboxylic acids

Front 27

Bromine in methylene chloride

Back 27

presence of hydrocarbons

Positive=colorless

Negative=light brown

Front 28

Baeyer test

Back 28

Presence of alkene or alkyne

Positive=brown

Negative=dark pink

Front 29

Belstein test

Back 29

Presence of halogen

Burn w/ copper wire

Positive=green flame