18.1 The Homologous Series If Aldehydes And Ketones Flashcards
Aldehydes are formed from
Oxidation of primary alcohols
Ketones are formed from
Oxidation of secondary alchohols
In aldehydes what is the carbon atom in carbonyl bonded to?
A carbon and a hydrogen atom
In ketones, the carbonyl group is attached to
Two other carbon atoms
The general equation for the reaction in which aldehyde is made
Primary alcohol + oxygen from oxidising agent—> aldehyde+water
The oxidising agent used is solution of potassium dichromate acidified with dilute sulphuric acid
What is notable physical change in the reaction of primary alcohol with oxygen?
The reaction mixture turns green as the orange dichromate ions turn green
The general equation for making a keton is
Secondary alcohol alcohol plus oxygen atom from oxidising agent—>ketone plus water
