What is the conjugate acid of HSO4- in the reaction below? H2 SO4 (aq) + H2 O(l) rightleftharpoons H3 O+(aq) + HSO 4 -(aq)
A. SO 4 ^ 2-
B. H 2 O
C. H 3 O^ +
D. H 2 SO 4

Respuesta :

Answer:

When H2O acts as a base, it gains one H, which forms its conjugate acid, H30. ... Conjugate acid-base pairs: H2SO4/HSO4 andH3O+/H2O ... CO32-(aq) + H2O(1) 2 HCO3 (aq) + OH(aq).

The conjugate acid of HSO4- in the reaction is H2SO4.

The conjugate acid of a particular base is obtained by adding a proton to it.

Now we have the reaction; H2SO4 (aq) + H2O(l) ----->  H3O+(aq) + HSO4^-(aq). We have to look at the reaction carefully and find out which specie can be obtained from HSO4- by adding a proton.

Clearly, the specie that we are looking for is the same specie from which a proton was removed to yield HSO4-.

Through examination of the reaction shows that this specie must be H2SO4.

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