Carbonyls

Question 1

What are examples of carbonyls?

Answer 1

ketones and aldehydes

Question 2

What is the reaction with Tollens?

Answer 2

3cm^2 of silver nitrate
5-6 drops of NaOH
add ammonia
add the unknown
add to water bath
postive result: silver mirror

Question 3

What is the 2,4-DNPH reaction?

Answer 3

add 1cm^2 2,4-DNPH to a test tube
add the unknown
positive result: yellow/orange ppt (carbonyl)
can use ppt to identify carbonyl by comparing mp to database

Question 4

Are carboxylic acids soluble?

Answer 4

yes, they dissolve in water because of the OH

Question 5

What is the test for carboxylic acids?

Answer 5

add carbonate
postivie result: CO2 bubbles