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Question: What is the difference between Arrhenius, Bronsted-lowry and Lewis acids and bases\[?\]...

What is the difference between Arrhenius, Bronsted-lowry and Lewis acids and bases??

Explanation

Solution

First we know Arrhenius, Bronsted-lowry and Lewis acids and bases. Then mention the difference between Arrhenius, Bronsted-lowry and Lewis acids and bases. Also give some examples.

Complete answer:
An Arrhenius base increases the concentration of OH- ions. A Bronsted-Lowry acid is any species that donates a proton to another molecule. A Bronsted-Lowry base is any species that accepts a proton from another molecule. A Lewis acid is an electron pair acceptor.
In Arrhenius, we are limited to cases in which water is the solvent. An acid will dissolve in water to produce H+ ions, while a base will dissolve in water to produce OHO{H^ - } ions.
Bronsted and Lowry state that an acid is any substance that will donate a proton (meaning an H+{H^ + } ion). This includes the case where the donation of the proton is made to a water molecule (which therefore includes everything Arrhenius would have considered), but allows for donation of protons to many other substances, opening the door for proton-transfer reactions such as
HCl+NH3NH4++ClHCl + N{H_3} \to NH_4^ + + C{l^ - }
The Lewis definition goes this one further in stating that an acid is a substance that can receive an electron pair (meaning the lone pair of a particle) and that a base is a substance that can donate a lone pair.
Again, this definition includes all cases that fit into the B-L scheme, because the H+{H^ + } proton Bronsted and Lowry refer to is a proton with an empty orbital. This orbital can bond with the lone pair of a particle such as the ammonia molecule (the NN atom has a full orbital not used to bond to the three HH atoms, hence a lone pair).
However, Lewis also includes cases in which the H+{H^ + } proton is not the particle being transferred, and so broadens the concept of acids and bases to include many more cases. For example
BF3+FBF4B{F_3} + {F^ - } \to BF_4^ -
would not be an acid-base reaction according to Bronsted-Lowry, but does qualify in the Lewis sense.

Note:
Note the Bronsted and Lowry also change our thinking of what makes a substance a base. All that is required is that a particle (atom, molecule or ion) be able to acquire a proton, and that particle is a base. Check out the role of NH3N{H_3} above.