what are the limitations of bronsted-lowry concept of acids and bases?
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LIMITS OF THE THEORY---It has been verified experimentally that in solution may not exist the free proton (H+). This has a large charge density and generates a very strong electron field. Therefore, is always associated with one or more molecules of water, H3O+ , H9O4+
Although for simplicity we'll continue writing H+, in reality this ion is always in his hydrated form. Then an acid cannot be a substance that simply free H+ ions;
Although for simplicity we'll continue writing H+, in reality this ion is always in his hydrated form. Then an acid cannot be a substance that simply free H+ ions;
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Explanation:
limitation of bronsted lowry concept
The proton definition cannot be used to explain the reaction occurring in non protonic solvent such as cocl2
It cannot explain the reactions between acidic oxides and the basic oxides which take place even in the absence of solvent
Substances like BF3 do not have any hydrogen and hence cannot give a Proton but are known to behave as acids
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