Water is well known amphoprotic solvent. In which chemical reaction water is behaving as a base ?

Question

Water is well known amphoprotic solvent. In which chemical reaction water is behaving as a base ? (A)  H2SO4 + H2O longrightarrow H3O+ + HSO4-  (B)  H2O + H2O longrightarrow H3O+ + OH-  (C)  H2O + NH2- longrightarrow NH3+ + OH-  (D)  H2O + NH3 longrightarrow NH+4 + OH-

Tardigrade Admin · Accepted Answer

According to Bronsted-Lowry concept, bases are the substance which have a tendency to accept a proton.

(a)

acid H_{2} S O_{4} + base H_{2} O \to conjugated acid H_{3} O^{+} + conjugated base H S O_{4}^{-}

(b)

acid H_{2} O + base H_{2} O ⟶ conjugate acid H_{3} O^{+} + conjugate base O H^{-}

(c)

acid H_{2} O + base N H_{2}^{-} ⟶ conjugate acid N H_{3} + conjugate base O H^{-}

(d)

acid H_{2} O + base N H_{3} ⟶ conjugate acid N H_{4}^{+} + conjugate base O H^{-}

Q. Water is well known amphoprotic solvent. In which chemical reaction water is behaving as a base ?

$H_{2} S O_{4} + H_{2} O ⟶ H_{3} O^{+} + H S O_{4}^{-}$

$H_{2} O + H_{2} O ⟶ H_{3} O^{+} + O H^{-}$

$H_{2} O + N H_{2}^{-} ⟶ N H_{3}^{+} + O H^{-}$

$H_{2} O + N H_{3} ⟶ N H_{4}^{+} + O H^{-}$

Q. Water is well known amphoprotic solvent. In which chemical reaction water is behaving as a base ?

H2​SO4​+H2​O⟶H3​O++HSO4−​

H2​O+H2​O⟶H3​O++OH−

H2​O+NH2−​⟶NH3+​+OH−

H2​O+NH3​⟶NH4+​+OH−

$H_{2} S O_{4} + H_{2} O ⟶ H_{3} O^{+} + H S O_{4}^{-}$

$H_{2} O + H_{2} O ⟶ H_{3} O^{+} + O H^{-}$

$H_{2} O + N H_{2}^{-} ⟶ N H_{3}^{+} + O H^{-}$

$H_{2} O + N H_{3} ⟶ N H_{4}^{+} + O H^{-}$