Question

Among the following, the one which can act as both Bronsted acid as well as Bronsted base is

• A. $H_{3}P{O}_4$
• B. $AlC{l}_3$
• C. $C{H}_{3}CO{O}^{-}$
• D. $H_{2}O$

Answer 1

Answer: (D)

Water can behave as both Bronsted acid as well as Bronsted base.
$\underset{\text{acid}}{H_{2}O}+\underset{\text{base}}{H_{2}O}{H}_3{O}^{+}+O{H}^{-}$