3 public questions tagged with this topic.
HS- can donate H+ (acid) to form S²⁻ or accept H+ (base) to form H₂S , making it amphoteric.
Ref: NCERT Class 11 Chemistry > Chapter 6: Equilibrium > Topic: Ionic Equilibrium - Acids Bases and pH and Ionization of Weak Acids Bases
H₂O can accept an electron pair (Lewis acid) or donate a lone pair (Lewis base), making it amphoteric.
Ref: NCERT Class 11 Chemistry > Chapter 6: Equilibrium > Topic: Ionic Equilibrium - Acids Bases and pH and Ionization of Weak Acids Bases
Al(OH)3 can accept a lone pair (acid) or donate OH- (base).
Ref: NCERT Class 11 Chemistry > Chapter 6: Equilibrium > Topic: Acid-Base Theories - Arrhenius Bronsted-Lowry Lewis and Salts Hydrolysis
