CHEM BONDING
Relation between backbonding and acidic strength?
- in the first example, backbonding in sih3oh is the reason for it to be more acidic.
- but the second example also makes sense. here when the back bonding is effective, the shortage of electrons is compensated and the lewis acid character decreases.
12 Replies
@Dexter
Note for OP
+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.lewis acids are known for their tendency to accept electrons, but backbonding is when the vacant orbital is filled.. so, greater the extent of backbonding, lower the lewis acidic character, I don't understand what's your confusion in the first example though
but like in the first case...when back bonding occurs, electron deficiency on the central atom decreases, stabilizing the conjugate base and increasing acidity.
toh acidity inc hoti hai ya dec in backbonding cases?
acidity depends inversely on backbonding extent
remember this
In the first example, it says Si compound is more acidic bcuz it has backbonding, but ur saying the opposite
Im confused
in the first example they are not talking about lewis acid strength, they are saying that due to the oxygen backbond, it is more stable and thus it does not give OH-. Lewis acid strength is like capacity to take up a lone pair, which also decreases on increase in backbonding
the first one is the theory according to bronsted lowry
h+ oh- thing
see this reasoning is a bit of a scam
the thing is that you see data and try and backtrack with theories
Chemistry Stack Exchange
When to consider back bonding and when to not; when will it change ...
This question has been troubling me since my professor taught this concept.
Points that she taught:
pi back bonding can only happen amongst elements of 2nd and 3rd period.
At least one of them nee...
(this as in dpi ppi :D)
we good?
Yep
+solved @iTeachChem
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