Why Formaldehyde is more reactive then other aldehydes? justify .

The reactivity of Aldehydes depend upon two factors .

1 Steric effect :- The reactivity of aldehyde depends upon the fact that the nucleophile will attack on the Carbon atom of the carbonyl group. If it is less crowded the nucleophile can easily approach it and can easily react. So lesser is the hinderance more will be the reactivity. In case of formaldehyde the carbonyl atom is joined to two Hydrogen atoms and the carbon atom of carbonyl group is easily approachable . It is shown below :-

2 Inductive effect :- The +I effect increase the electron density on carbon atom of carbonyl group, which makes it less polar and less electrophillic in nature. But in case of formaldehyde there is not any electron releasing or electron donating group present. Thus the carbon atom of carbonyl group is more electrophillic in nature so it is more reactive .


Published by ankushmaster

I am M.Sc (chemistry ) from punjabi university. I am a science teacher with expertise in chemistry, with 8 years of experiance in teaching. i am getting a handsome salary , now i wish to help out the people who need me UNCONDITIONALLY. and I am constantly working on creating a new and easy way of learning the tough things in an effective way. I am constantly working to make authentic and reliable information to be shared with my students and widen the horizons of knowledge.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: