lewis concept

Lewis Concept of Acids and Bases - In 1938 G.N. Lewis put forward a more generalized acid-base concept. According to this concept, an acid is a species (charged or uncharged), which can accept a pair of electrons and a base is a species (charged and..

Lewis Concept of Acids and Bases - Although Bronsted-Lowry theory was more general than Arrhenius' theory of acids and bases, it failed to explain the acid-base reactions which do not involve transfer of proton. For e.g., it fails to explain how acidic oxide such as anhydrous CO..

Although Bronsted-Lowry theory was more general than Arrhenius' theory of acids and bases, it failed to explain the acid-base reactions which do not involve transfer of proton. For e.g., it fails to explain how acidic oxide such as anhydrous CO 2 , SO 2 , SO 3 etc can neutralise basic oxides such a..

Whenever a Lewis acid reacts with a Lewis base, a covalent bond is formed. For example, CO 2 (Lewis acid) reacts with OH - (Lewis base) to give HCO 3 - (bicarbonate ion), BF 3 (boron trifluoride) behaves as a Lewis acid and NH 3 (ammonia) as ..

Acid-base reactions according to this concept involve donation of electron pair by a base to an acid to form a co-ordinate bond. Lewis bases can be neutral molecules such as the ones shown below: These have one or more unshared pair/s of electrons or anions such as C..

Quantum Theory of Covalent Bond - Although the Lewis structures give an idea of the valence electrons around the atom, in reality it does not precisely locate the position of the electrons in the chemical bond. The behaviour of electrons in molecules and compounds is made by the valence b..