?

AP® Chemistry

Free Version

Upgrade subject to access all content

Moderate

Dissociation of Sulfuric Acid in Water

APCHEM-JJOXEV

When sulfuric acid is combined with water, the dissociation occurs in a stepwise series of reactions:

$$H_2SO_{4 (aq)} \rightleftharpoons H^{+}_{(aq)} + HSO^{-}_{4 (aq)}$$

$$HSO^{-}_{4 (aq)} \rightleftharpoons H^{+}_{(aq)} + SO^{2-}_{4 (aq)}$$

Which of the following lists the species in order of increasing of acid strength?

A

$H_2SO_4 < HSO^-_4 < SO^{2-}_4$

B

$ HSO^-_4 < SO^{2-}_4 < H_2SO_4$

C

$SO^{2-}_4 < H_2SO_4 < HSO^-_4 $

D

$SO^{2-}_4 < HSO^-_4 < H_2SO_4$