Acids, Bases And Salts - Theories

Examples based on : Bronsted - Lowery Concept

Ex.Select the aprotic solvent from the following is :
    A) H₂O    B) C₆H₆    C) HF    D) NH₃
Sol. B) according to the classification of solvents.

Ex.The strongest conjugate base is -
    A) Cl^–        B) CH₃COO^–    C) SO₄^2–    D) NO₂^–
Sol. B) CH3COOH is weakest acid among HCl, CH₃COOH, HSO₄^– and HNO₂.

Ex.Which is the strongest Bronsted base in the following anions :
    A) ClO^–    B) ClO₂^–    C) ClO₃^–    D) ClO₄^–
Sol. A), HClO is weakest acid among HClO, HClO₂, HClO₃ and HClO₄.

Ex.Give appropriate equation and label acid and base.
Sol. NH₂CONH₂  +  NH₃  \( \to \)    NH₄⁺  +  NH₂CONH^–
           Acid                base            Acid           base
In liquid NH₃ solution urea can show weak acidic nature.

Ex.Ammonium ion is-
    A) A Lewis acid    B) Lewis base        C) Bronsted acid    D) Bronsted base        
Sol.Correct answer is C)