Chapter 18.2, Problem 13PP

Interpretation Introduction

Interpretation:

First and second ionization equation of given compound is written.

Concept introduction:

Ionization equations show the species which are formed on dissolving the compound in aqueous solution.

Answer to Problem 13PP

First ionization equation:

$H_{2}Se{O}_3+H_{2}O\rightleftharpoons HSe{O}_3{}^{-}+H_3{O}^{+}$

Second ionization equation:

$HSe{O}_3{}^{-}+H_{2}O\rightleftharpoons Se{O}_3{}^{2-}+H_3{O}^{+}$

Explanation of Solution

$H_{2}Se{O}_3$ has two ionisable hydrogen ion because two hydrogen in the structure are present as $O-H$

Conclusion

Thus,

First ionization equation:

$H_{2}Se{O}_3+H_{2}O\rightleftharpoons HSe{O}_3{}^{-}+H_3{O}^{+}$

Second ionization equation:

$HSe{O}_3{}^{-}+H_{2}O\rightleftharpoons Se{O}_3{}^{2-}+H_3{O}^{+}$