SATHEE: Equilibrium - Result Question 51

Equilibrium - Result Question 51

####53. Which one of the following compounds is not a protonic acid?

(a) $S O_{2} (O H)_{2}$

(b) $B (O H)_{3}$

(c) $P O (O H)_{3}$

(d) $S O (O H)_{2}$

[2003]

Show Answer

Solution:

(b) $B (O H)_{3}$ does not provide $H^{+}$ ions in water instead it accepts $O H^{-}$ ion and hence it is Lewis acid

$B (O H)_{3} + H_{2} O \to [B (O H)_{4}]^{-} + H^{+}$

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