In the below equation - I - + I 2 → I 3 - Which is the lewis acid and why?

In the below equation -

I- + I2  → I3-

Which is the lewis acid and why?


1 Answers

Aman Bansal
592 Points
11 years ago

Dear Dushyant,


A Lewis acid is an electron pair acceptor. A Lewis base is an electron pair donor. This definition is more general than those we have seen to this point; anyArrhenius acid or base, or any Bronsted-Lowry acid or base can also be viewed as a Lewis acid or base. The reaction of H1+ with OH1-, for instance, involves donation and acceptance of a proton, so it is certainly legitimate to call it a Bronsted-Lowry acid-base reaction. But if we look at the Lewis structures for the reactants and products, we see that it is also legitimate to call this a Lewis acid-base reaction.
The hydroxide ion donates a pair of electrons for covalent bond formation, thus OH1- is a Lewis base in this reaction. The hydrogen ion accepts the pair of electrons so it is acting as a Lewis acid. Shown below is an example of a Lewis acid-base reaction that cannot be viewed as a Bronsted-Lowry acid-base reaction.


Best Of Luck...!!!!

Cracking IIT just got more exciting,It’s not just all about getting assistance from IITians, alongside Target Achievement and Rewards play an important role. ASKIITIANS has it all for you, wherein you get assistance only from IITians for your preparation and win by answering queries in the discussion forums. Reward points 5 + 15 for all those who upload their pic and download the ASKIITIANS Toolbar, just a simple  to download the toolbar….

So start the brain storming…. become a leader with Elite Expert League ASKIITIANS


Aman Bansal

Askiitian Expert


Think You Can Provide A Better Answer ?


Get your questions answered by the expert for free