Oxidation of aldehdes and ketons

Question 1

What is formed from the oxidising of an aldehyde?

Answer 1

= a carboxylic acid
= cannot be oxidised any further
= heated under reflux

Question 2

What is formed from oxidising a ketone?

Answer 2

= nothing
= ketons cannot be oxifised

Question 3

How do we test to distinguish between ketones and aldehydes?

Answer 3

aldehydes:
= heat with fehlings solution (A+B)
= blue to brick red precipitate- positive
= negative with ketons

ketones:
= heat with tollens reagant
= colourless solution, silver pure mirror is formed