LAB MOD 7

Question 1

common name of methanal

Answer 1

Formaldehyde

Question 2

Common name of ethanal

Answer 2

Acetaldehyde

Question 3

common name of butanal

Answer 3

Butyraldehyde

Question 4

the only compound that is immiscible in water

Answer 4

Butanal

Question 4

common name of butanone

Answer 4

Methyl ethyl ketone

Question 5

color observed in methanal (schiff’s test)

Answer 5

purple

Question 6

is a pungent smelling colorless gas that polymerises spontaneously into paraformaldehyde.

Answer 6

Formaldehyde; methanal

Question 7

one of the most important aldehydes, occuring widely in nature. chem formula of CH3CHO, sometimes abbreviated by chemist as MeCHO Me=methyl

Answer 7

Acetaldehyde,; ethanal

Question 8

colorless flammable liquid with an unpleasant smell

Answer 8

Butyraldehyde; butanal

Question 9

flas point and BP of butyraldehyde:

Answer 9

FP: 20 F (-6.66667 C)
BP: 75.5 F (24.16667 C)

Question 10

colorless liquid ketone has a sharp, sweet odor reminiscent of acetone.

Answer 10

Methyl Ethyl Ketone; Butanone

Question 11

FP and BP of butanone

Answer 11

FP: 20 F (-6.66667 C)
BP: 6.71 lbs/gal

Question 12

color observed in ethanal in schiff’s test

Answer 12

Magenta

Question 13

butanone after sodium nitroprusside

Answer 13

orange, blood red,

Question 14

color of butanone after adding glacial acetic acid

Answer 14

wine red, dark red

Question 15

reaction of methanl in tollens and benedicts test

Answer 15

Formation of silver mirro- Tolelns

Cloudy dark blue sol- benedicts

Question 16

is a genera; and old chemical test used to detect presence of aldehydes

Answer 16

Schiff’s test

Question 17

is used to detect for presence of methyl ketones., usually inurine

Answer 17

Sodium nitroprusside