Question

For a polybasic acid, the dissociation constants have a different values for each step, e.g.,

$SO_{2}$ $\mathbf{O}_{\mathbf{2}}$

$SO_{2}$ $SO_{2},O_{2}$

$SO_{3}$ $5.1$

What is the observed trend of dissociation constants in successive stages?

• A. $3.9$
• B. $10.5$
• C. $8.5$
• D. $H_{2(g)} + I_{2(g)}$

Answer 1

Answer: (A)

$3.9$

Answer 2

: The values of dissociation constants for successive stages decrease.