Equilibrium Question 67
Question: The species among the following, which can act as an acid and a base is [AIEEE 2002; KCET 2005]
Options:
A) $ HSO_4^{-} $
B) $ SO_4^{2-} $
C) $ H_3{O^{+}} $
D) $ C{l^{-}} $
Show Answer
Answer:
Correct Answer: A
Solution:
The species which can accept as well as donate $ {H^{+}} $ can act both as an acid and a base. $ \underset{base}{\mathop{HSO_4^{-}}},+{H^{+}} $ ⇌ $ H_2SO_4 $
$ \underset{acid}{\mathop{HSO_4^{-}}}, $ ⇌ $ SO_4^{2-}+{H^{+}} $
