Interpretation : Lewis’s theory is a more general classification system than either the Arrhenius descriptions or the Bronsted-Lowry theory to be explained.
Concept Introduction : Acids are used to produce hydrogen ions by ionization. Bases are used to produce hydroxide ions by ionization.
Answer to Problem 79A
Lewis’s theory is a more general classification system than either the Arrhenius descriptions or the Bronsted-Lowry theory because he defined an acid as an electron-pair acceptor and a base as an electron-pair donor.
Explanation of Solution
Acids, according to Arrhenius, are substances that contain hydrogen and ionize to produce hydrogen ions
Bases are substances that ionize in aqueous solutions to produce hydroxide ions
According to Bronsted-Lowry theory, a hydrogen ion that acts as a donor is an acid while a hydrogen ion that acts as an acceptor is a base.
According to Lewis’s theory, during a reaction, an acid takes in a pair of electrons and a base indicates a pair of electrons.
Since Lewis’s theory gives a simple definition as well as an apt definition for acid and base it is used more commonly than other theories.
Lewis defined an acid as an electron-pair acceptor and a base as an electron-pair donor.
It includes all the acids and bases of Bronsted-Lowry acids and bases.
A chemical that can receive two electrons to create a covalent bond is known as a Lewis acid.
A chemical known as a Lewis base can signify a pair of electrons to create a covalent bond.
Chapter 19 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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