Question

Water is well known amphoprotic solvent. In which chemical reaction water is behaving as a base?
(a) $H_2SO_4 + H_2O \longrightarrow H_3O^+ + HSO_4^-$
(b) $H_2O + H_2O \longrightarrow H_3O^+ + OH^-$
(c) $H_2O + NH_2^- \longrightarrow NH_3 + OH^-$
(d) $H_2O + NH_3 \longrightarrow NH_4^+ + OH^-$

Answer 1

The oxygen atom in the water molecule has two lone pairs, one of which could be used to form a bond with a \(H^+\(, and, therefore, the water molecule could act as a base in a reaction. Since water has the potential to act both as an acid and as a base, water is amphoteric.

Answer 2

Answer:

(a) H₂SO$_{4}$+H₂O → H$_{3}$O$^{+}$ + HSO$-_{4}$

H₂SO$_{4}$+H₂O → H$_{3}$O$^{+}$ + HSO$-_{4}$ Water is well known amphiprotic solvent.

Explanation:

The oxygen atom in the water molecule has two lone pairs, one of which could form a bond allowing the water molecule to act as a base in a reaction. Water is amphoteric because it has the ability to act as both an acid and a base. Water, ammonia, ethyl alcohol, and other photophilic or proteogenic solvents are examples of amphiprotic solvents.

i,e H₂SO$_{4}$+H₂O → H$_{3}$O$^{+}$ + HSO$-_{4}$ Water is well known amphiprotic solvent.