15B.1

Question 1

What are carbonyl groups

Answer 1

compounds with the functional formula of C=O for example ketone and aldehyde (NOT CARBOXYLIC ACID)

Question 2

what is the general formula for aldehydes

Answer 2

RCHO

Question 3

what last name is given to aldehydes

Answer 3

methanal al

Question 4

a carbonyl compound compound is only descried as a aldehydes if

Answer 4

if there is a hydrogen atom joined with the carbonyl group

Question 5

a carbonyl compound compound is only descried as a ketone if

Answer 5

hydrocarbon groups are joined with the carbon group

Question 6

what is the general formula for ketones

Answer 6

RCOR

Question 7

what does the ketone end with

Answer 7

one

Question 8

what is different about the C=O

Answer 8

it is polar with more electron density around the oxygen

Question 9

what is the smell of aldehydes

Answer 9

short carbon chains have unpleasant smell (butanal) and the long carbon chain have pleasant smells (nonanal)

Question 10

the smells of lower ketones remind people of

Answer 10

solvents specially propanone

Question 11

what is the trend in boiling points for aldehydes and ketones

Answer 11

as the molar mass increases the boiling point increases

Question 12

why are ketones and aldehydes have lower boiling points than alcohol

Answer 12

because alcohols have hydrogen bonding

Question 13

are carbonyl compounds soluble in water

Answer 13

in the shorter chains yes because they can form hydrogen bonds with the water molecules, but with larger chains the solubility decreases because the hydrogen part of the molecule becomes more significant and the intermolecular forces become strong than the C=O force